I'd prolly get an MBX5 and just trick the he|| out of it!![&:]
I would get the Rossi Black Magic motor, the best pipe in the world. Then for servos, I would pick up some Ko Propo PDS-2143 FET digital servos and I would get a JR R1 radio. Then I would buy another X5 for parts. After that I'd probably get the Mugen MRX4 (1/8 scale on-road) and do all the same stuff except I would get the Rossi Maranello engine. After that, I'd bee set for life! lol.