RE: f-22 speed plane help wanted
For affordable speed, keep an eye on the swap-shop for a Rossi-60/61 FIRE, or for $100 bucks new a Tower-75 will turn an 11x8 VERY well for the $ (I ran a 10x10 on mine with good results-)
Fuel should be the least of your concerns, a Rossi or other European engine will run well on 0-5% whereas the TH-75 likes 15% at least---
Good luck and please keep us posted!