I just bought a Christen Eagle from Giant Scale Planes at the Joe Nall fly-in this past weekend. The plane calls for a 120 4-stroke and although I'm not going to be doing any spectacular aerobatics with it, I don't want to be underpowered either. Been there and done that with a previous bipe I've got. The plane weighs in the 11.5 - 12 lb. range so will I be safe with a 120? Thanks for the help!