I picked up everything I needed at Tower. Novak XXL receiver ($57), Novak SPY ESC ($60) and Hitek HS55 servo ($18). For the transmitter, I'm using the one that came with my Mini-Z.
http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXCNR7
http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXTX41
http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXNE03
I don't have it all setup yet, I just connected up the electronics to a set of batteries to make sure everything was working. I've only just started to assemble the chassis. Suspension and drivetrain is all assembled onto the main chassis, but the upper plate is going to need some trimming in order to fit my 180 motor.