What size engine are you planning on using on this plane?At 36",that is putting you into a .15 size engine category roughly.Any larger engine than that and you may as well just built one of these.

http://www.rcmmagazine.com/store/sto...2eDIP8aZ84X6x4


At a 48' wingspan,it is being powered by a .19-.25 size engine.A .20 and a .25 size engine are almost identical in size and weight so you got me curious as to what your planning to use for power if not a .15..