It looks very similar in design and build as a 30" foam Corsair that I had and did a brushless upgrade on, I went too big and had a rocket ship, it flew, but torque rolled like hell and was nose heavy, I used the motor and propeller from the 1100mm Durafly Corsair, was great fun though.
If I were doing it again I would probably use Motor: 2825-1950kv Brushless outrunner motor ESC: 20A High-Spec 3~4S and start with an 850 mAh 3S battery that way if it didn't have enough power I could upgrade it by going to a 4S battery, I would also use a 5.5x 4.5 propeller.
The Corsair with too much power on too small an oval.