Great plane and engine choice!

I've found that a 10x6 is too little prop for this engine. Mine swings an 11x6 at over 13.3K, 10x6 will be well over 14K, too fast for good longevity.

Good prop options for this engine would be 10x7 (fast flyin'!), 11x6 (sporty!), 11x5 (thrusty, slower!) or 12x4 (3d thrust!)

Any decent fuel, 10-15% with castor/synthetic mix would be great. I use Omega 15%, others will work as well.

J