And get them in standard revo size, maxx size, or 40 series?? What is the handling difference between the three?? And foams?

(My shoping list as of now... new steering servo, single servo arm, heavey duty servo saver spring, new motor XTM .18 for the cheap route or RB .23 with pipe for the expensive route, wing and mount, new body, reciever and 2 chip sets, and 2 sets of wheels and tires. I think that covers it for now... LoL)