How about 8.0 and 7.0 Cheetahs and 6.3 Tiger? Simple, efficient and fun. This would have been my choice if I was your weight. The 8.5 will give you such a negligent bump in early planing over 8.0 that its not worth the 490 mast it needs and youll gain in upper end on top of that. One mast for every 2 sails -just the way I like it!
And really, to benefitt from sail sizes above 8.0 you need to have a specialist lightwind board. Something with a massive thickness and tail width, extra hard rails and an appropriate fin-think UltraSonic . For a moderate wind boards like ours such a big sails are just a dead weight-fun killers.

Corrections!!!
In my previous posts I was suggesting Ezzy Elite for strong wind allaround sail without realizing that they are 4 batten sails, wich probably categorises them as specialist wave sails. I have no experience with such sails, none and I cant comment on them. When did the Elite got changed to 4 battens?! This lieves the Tiger as the traditional 5 batten, bump and jump, wind swell riding, do it all strong wind sail in the Ezzy lineup and this is the type of sail I have experience with and can recommend-the equivalent of my dear Revos.
6.3 and 5.8 Tigers with one 430 Ezzy mast would be an awesome match to a 103 Kode FreeWave or simmilar moderate to strong wind board for everything from flat water blasting, basic freestyle and Lake Michigan wave riding and jumping IMHO. Below that for even stronger wind or proper waves riding you can probably start considering specialist wave sails and boards, I presume.

Ady, the Ezzy 4 batten first appeared with the 2013 Panther Elite. Now it's just the Elite. Jacob has a couple of them. He rigged one at Clinton this last spring. It's definitely a different animal than the 5 batten Tiger. It's got a lot softer draft and looks more like a down-the-line sail. Jacob will have to tell you more how they are on the water.

I'm a Tiger fan:
6.9
5.8
4.7
4.2
Each rig on their own mast. All with one boom.

What make and size boom is that, Reid?

Chris, it's a Aeron MCT 26 X, 150-200cm. The 6.9 Tiger rigs at 188cm

Cool. Thanks.

Reid Fillman wrote: Oh my, Ive messed it up. My bad! So in 2012 when I kissed my Ezzys goodby, it was the Panther Ltd the good 5 batten sail and the Tiger was a cheap offshoot. Then in 2013 as you've said the Panther got changed to 4 batten and renamed to Panther Elite and the Tiger got upgraded with all the bells and whistles . 2014 the Panther Elite became just the Elite.
www.ezzy.com/rig-support/all-years-ezzy-sails/
Hopefully Greg didn't order the wrong sail because of me!
I vote for:
8.0 Cheetah
7.0 Cheetah
6.3 Tiger

No harm Ady. Thanks
Thanks for all the advice. Conclusion after weighing pros and cons, I will probably mimic the sizes I had with the Gaastra quiver:
8.5 Ezzy Lion (want to be able to planne right at 12-13 kn)
7.5 Ezzy Cheetah (I feel the gap between 8.5 and 7.0 is a stretch. I prefer to guess for a few more minutes about what size sail to rig rather than being either over or underpowered in gusts or lulls, so I don't mind a bit of overlap. That way, the choice is a bit more forgiving... Who likes rigging, de-rigging and re-regging, right?!)
6.5 Ezzy Cheetah (I am comfortable with a 6.5 in 20+kn and I'm afraid that a 6.0 would be a sail I'd use too fewer times in the year. Also, the Ezzy Tiger was tempting but David Ezzy thinks that in my case, with my board and in my local conditions, the cheetah is still a better fit even in strong chop and gusts... Should I trust the expert?!)
So, might not be the perfect quiver for everyone, but I finally made a decision that I'm happy with.
And thanks for all the inputs

Thank YOU Gregory, for the productive long discussion! It kept me entertained thru yet another windless week.

I pulled the trigger and today I swapped all of my 3 months-old Gaastra kits for Ezzy's. Right off the bags, I am impressed with the quality in construction, design and attention to detail of the Ezzy sails. I got a 8.5 Lion, and a 7.5 & 6.5 Cheetah. I think I'm not going to regret it. I rigged quickly one before the end of the day and I love the positive built-in profile of the sails and the fact that the battens don't "wrap" around the mast. It is such an elegan foil that it has to perform as well as it looks. The sails' illustrations on Ezzy's website don't do justice to the sophistication and elegance of the design solutions. The sails are really a lot more impressive in real!

Also, I have to acknowledge Isthmus Sailboard in Madison, WI, for their amazing sense of customer service and their flexibility in making everything they can to satisfy their customers. At least, they certainly went above and beyond for me.
Can't wait for a puff of wind to try these beauties!

Cheers to that!

I know this is a little late, but I thought I'd provide my 2 cents on the Ezzy Elites. I just switched over to them at the end of last season and I've been very happy with the performance so far. But, As Reid mentioned, they are definitely a bit of a "different animal". I had been sailing on Ezzy Wave SE's (mid 2000's), which were super powerful for their size. The Wave SE was very "locked-in" with an extremely stable draft. Unless you ran a ton of outhaul, I thought that the batten-rotation on the Wave SE's was a little stiff--not quite as pronounced as a cammed sail, but more like a cammed sail than a pure wave sail. In contrast, the Elite feels much softer and more elastic, and it does not rig with as deep a draft. The draft moves around a little more on the Elite, and you can visibly see the sail flex more under load compared to the Wave SE. I think the Elite loses just a touch of low-end power and is slightly less stable compared to the Wave SE, but the difference is not that significant when sailing. And the Elite is in a different league when it comes to handling. It has a very light feel and is better in transitions ( it's easier to have the sail go "neutral" if you are on a wave or overpowered in a gybe). The Elites generally feel a little smaller/lighter/more compact than the equivalently sized Wave SE. I've been using them as all-around bump-n-jump sails and couldn't be happier.

I was worried that the Elite would be too much of a specialist wave sail, but it's proven to be really good for gusty midwest flatwater sailing.

In terms of spacing I have Elites in 6.1, 5.3, and 4.7 and then an older Wave SE in a 4.2. The spacing has been perfect. No complaints.