I will be using 4s, no question about it. They are maxamps 5000HV packs. I was also thinking that a bigger motor would do a little better, but i also thought the kv was perfect. I got a friend at my lhs that has an algorithm that will tell me about the speed I will be looking at. All I got to know is the tire diameter, diff ratio, and motor kv (still to be determined). If you guys have any suggestions on motors please share, if possible try to find one on
www.hobbycity.com. The prices are amazing.
Thank you for all of the help.