The 120 will be more than enough power.... I've got a 90 in mine, and it flies it quite nicely. I've always preferred the Long swept top wing and the shorter straight lower wing. Make sure you seal the aileron gaps, or it'll roll really slow. keep it light, and with the 120 on it, you'll probably wind up a bit nose heavy.

Dig around in this thread http://www.rcuniverse.com/forum/m_1682151/tm.htm and you'll find some decent pics...