SaviCatses,
I have a GP P-51 Mustang that came in right at 7 lbs. 1lb over the suggested weight. I am powering mine with a Thunder Tiger TTpro .46 and although it doesnt have unlimited vertical, it gets way up there before it stalls. I can do loops, rolls, immelmans, split s's, snaps, spins, all without a problem. I fly it at 1/2 to 3/4 throttle most times and have power to spare. Wide open, low speed passes are still pretty impressive and the plane definately moves out. I also had a jamara super chipmunk that flew great on an ASP 65 4 stroke. If it were me, I would prob get an adjustable motor mount and give it a go with the .46 if you have it laying around anyways. It will fly it and you can make your own decision as to whether it is enough engine for you or not. Just my opinion.

Warren