Thanks for the replies guys!
I was going rear motor purely for the outdoor side of it (and I'd found a half decent car at a half decent price that happens to be rear) and ill just have to see how it goes with regards to carpet. If it's too high grip then I'll just put on awful tyres!
If this does all go ahead then I'll probably be turning up on the night and buying tyres and carpet protector half hour before the race starts.
Also whilst I've managed to get away with potentially buying all the electronics and car in a week, I won't be able to get away with buying all the tools etc so I may be bugging one or two of you for a particular spanner if I happen to not have one lying around if that's ok. Also I won't have a table for the first few races (not that Ill really have spares or tools so guess I won't need one for much!)