A 91 Surpass should be fine. Engine recommendations are 60 to 75 2 cyc and 91 to 120 4 cyc. Control surface throws are 1/2" aileron, 3/4" elev, and 1-1/4" rudder. A 14 oz tank is shown on plans. I plan to install outer struts both for appearance and stability of the upper wing. Can't find anything on weight. Plane has a different cg for each of the 3 versions. Good Luck!!!!!