I am at 2200 feet so should be close to where you are. I am using an apc 17x8. seems to me a 17x6 or 16x8 may be better, but the engine is no where close to broke in. I have only ran 3 tanks through mine, but it ran well straight from the box. I always say if there running good run them in the air. I may get to the field tomorrow, so if I do I will report. The extra Battery aided me in CG. I glassed the fire wall and added expoy to alot of joints. May have not needed it but better safe than sorry. I was so impressed with the little 26, I ordered a 40 from peak to go on a Seagull Super Star. I do not think the SS will the 3d and slow flight plane the peak edge is, but the 40 should make it a blast to fly.