ForeverHero...

I fly at 4800' elevation. So I feel your pain. I use a Saito 82. I use a APC 14x4W prop and I think it's perfect. Flys the plane very nice. I use 30% Cool Power fuel. The 30% is a necessity here in the mountains. It makes up for some of the elevation.

You'll love this combo.

Thanks
BArry