Chris,
Let me point you in the direction of Dualsky Motors. I have flown these for two years and the 110 size would be perfect for this plane. I used this motor in my E-Pentathlon with a takeoff weight of 10 lbs 2 oz. Slightly underpowered but got 3rd in Advanced with it. I used 3750 mah packs to also help keep weight down.
check them out at
www.2dogrc.com
Chuck Hochhalter