I bought the 120 size and put a G26 on it. Took a lot of work to modify it from the way they designed it. It is a light plane, I just put the E-Flite retracts on it, but haven't had a chance to fly it since. I would definitely put the larger of the range of engines they recommend on it, my opinion, you will be sorely disappointed with the performance, if you can get a 70 to fly it in less than perfect conditions. The handling is pretty tame, not a trainer, but more graceful, you do have to stay ahead of it. It has dihedral, but it also has a tapered wing, and I can feel the difference when I get it slow.

http://www.rcuniverse.com/forum/m_96...mpage_3/tm.htm

Some pictures of mine