Next month a complete 710 set is released:
I don't know what the price will be, but the car has some nice optional parts standard: RCC shocks, rear gear diff.
I dunno about the engine and the Sanwa radio is AM.
You will need a couple of high quality allen screwdrivers like Hudy (2 and 2,5 mm will be the ones you use mostly), a "normal" screwdriver and a Philips screwdriver (kruiskoppie).
Fuel (Tornado 16%) ,glow plug driver Rx and Tx battery pack and charger.
What track will you be racing?
Maybe you can go to that track with your car and get some advice on what to buy....you can also go to your LHS and ask, but you could end up with stuff you'll never use...
But the 710 is a good choice!!