I have constructed an SU-30 using a 70mm ducted fan. It was constructed from Dollar Tree foam board. It weighs in at 31 oz. with a 3300mAh 4 cell 30C battery. I used a 60 Amp ESC, Lemon Stabilizer Plus receiver, and Spektrum DS7 transmitter.
I haven't flown it yet, the weather has been poor, it should break soon.
That's a decent weight with that size of battery, it should do great. Good luck on the maiden. 🙂