I ran across this quad at rctimer.com and I think it might work better for me than the TBS Discovery. I know it has a larger battery compartment.
RCT Spider FPV Quadcopter Frame W/ Landing gear - 450 -600 Size - RCTimer RC Plane Car MultiRotor APM and MultiWii Carbon Fiber Propeller Hobby Store
RCT Spider FPV Quadcopter Frame W/ Landing gear - 450 -600 Size - RCTimer RC Plane Car MultiRotor APM and MultiWii Carbon Fiber Propeller Hobby Store