Dom-

You've made a great choice on a plane (really glad it's a kit ) and the advice to get a sim to experiment with over the winter is a good one. As far as a radio system, this is where you want to get input from the local club you're thinking of joining. You really can't go wrong on a simple 2.4 system from one of the major manufacturers but you need to be compatible with your instructor. So it's best to ask what they prefer and are equiped to hook up to with the buddy system. Most clubs can handle any radio system but some cannot.

Personally, if expenses are not a big issue, I'd recommend at least a 6 channel system to start. No, not because you think you'll need flaps and retracts. But rather for dual aileron servos on seperate channels so you can program in aileron differential if needed and maybe even flaperons. Make sure the system has Expo and either a decent amount of model memory ot that it is expandable for that purpose. Most 4 channel systems are very limited and you'll outgrow one in a hurry. Keep in mind that the brand of radio you first chose will often lock you into future purchases so choose carefully!

Good luck and welcome aboard!