Go to the extreme
i have an ultra stick 60 with zenoah 20ei, just a little mods needed, elevator and servos on tail, reinforce firewall, and i put a landing gear from an older ultra stick 120, unlimited vertical with master airscrew 16x10
video here
http://www.youtube.com/watch?v=sF04N9ioSk0
Photos here
http://www.selosdije.com/ultrastickmod/
And the best is
Gas is cheaper than glow