You might want to consider a Sig Kadet LT-25 Trainer Kit:

http://www2.towerhobbies.com/cgi-bin...?&I=LXFG17&P=0

It would be a good fit for your OS engine. In addition our club uses it in our youth program and a 10 year old can build it in about 15hrs with a little help. Plus it is very easy to learn how to fly. We soloed 2 kids this year with about a half gallon of fuel using this plane. The kit is all lazer cut and SIG makes great planes of all types to help you advance. Don't be put off that it's a taildragger. That will present little problem with this plane.

Good luck.