The Roto 35 maybe enough for normal flying but I don't know what it will offer you as far as 3D ability goes. It weighs about 5 lbs so your plane will be over 15 lbs RTF. I'd check what kind of thrust you will get out of the 35 and go from there. In my opinion, this plane really just needs a glow motor. I had it with a DA 50 on it and it wasn't really a great combo due to the higher wing loading.

This is the blue and white scheme that is offered: