I'm on the last steps of this car. Trying to order the electronics today if possible.
I have not found the cirtix esc + motor combo in stock anywhere, so still finding something reasonable.
As for the radio + receiver, i'm settled on Airtronics MX-3X 2.4GHz Competition Pistol Grip w/RX-45 . Bit more expensive, but I can use it with my 3 other cars (just needs rx's units for them).
Suggestions on servo for the cup racer? So far i've found Savox SH-1357 Super Speed Mini Digital Servo in this thread. Any other options?