Looking to help a friend out buying the new 4x4 Slash. Just curious if 3S is going to be too much or not on the track. I currently run a Slash 2wd on 5250mah 2S packs with some aluminum on the truck. I am pretty positive that 3S would be too much on the track in mine but I am nelieve the 4x4 weighs more and will hook up better for obvious reasons. What do you all think for the track (2S or 3S)?