Ofcourse this setup will work, but in my opinion the 8411 on roll (i think Sebart also recommends them in the manual) is way to heavy and overkill. They're strong and relatively slow, and weigh about 57 gram a piece, so that's 114 gram in wingservo's.

I originally used the S9650's on ailerons, which do fine. I replaced them with the brushless successors (BLS 153) since they are 30% stronger. Both have enough power to handle ailerons on this plane, and both are faster than the 8411 and a lot lighter. The 9650, being the weaker, will be as fast as the 8411 (speed and strength are related), the BLS version will be faster.

Together they weigh 58 grams.. so that's 56 grams less on wingservo's. So the BLS 153 are faster, strong enough, cheaper and lighter.

Don't get me wrong, it's a minute difference. This airframe has a low wingloading as is, so the extra weight isn't that big of an issue. Both setups will work just fine.

@garRCfield: what AUW (weight including battery) does your setup have?

70A at 37v is 2590 Watt consumed power, but that doesn't mean you have 2.5kW power, it also depends on the efficiency of the engine.

Have fun tomorrow with your maiden. I loved the WindS from the first flight and still do after having made roughly 600 flights with it by now. It's a great plane.