Here is a setup I use in my glider towing plane. It weighs in at 12 pounds with a big 2 meter glider hooked on top
Motor
http://www.hobbypartz.com/96m606-big...030-400kv.html
ESC
http://www.hobbypartz.com/07e06-proton-60a.html
Battery
http://www.hobbypartz.com/98p-30c-5300-6s1p.html
I run a 16X8 APC E prop. Yanks the thing off the ground. I get 20 minute flights with good throttle management.
Buzz.