C Rating for the Orion/Peak 4800 Lipos?

[jhautz]

Revo G2R
Feigao 540C 9XL
Quark Monster 125
24/68 gearing on Robinson Slipper
EMaxx Tranny 2 speed w/steel Idlers
MIP CVD's
Proline Maxx Bowties or Losi Zombi Maxx (depending on where Im runnnig)

I am running a 5C 8000mah setup now, But Id like a smaller mah set of batteries for a lighter setup. Now with the truck totally loaded w/ batteries its just a shade over 11 1bs. I want to put it on a diet and those jumbo batteries are great for long bashing session, but really are overkill most of the time.

What I am trying to find is something lighter maybe around 4000mah 5s (3s pack + 2s pack) that will have enough discharge capacity to handle some hard running. I'm planning on heading out to the local track in the near future and trying my hand at racing. I never have before, but I know that these fat packs I have will not help me. So im looking for a lighter setup that will handle the discarge and hopefully not break the bank to badly either.