Hey Samier, pretty much ALL the current 1/12th cars are great. Xray, Serpent, CRC, Slapmaster, BMI, AE, or whatever will all do the job so go with the one that is the easiest to get in SA.

As for carpet, the CRC carpet is sort of the industry standard. I believe there are cheaper alternatives that are as good but I have no info on them. I'm sure someone else can add to it.