Big Brakes or new posi/gears? tough one...

[pcmcobra]

Since my 6.0 swap, I have put a couple hundred miles on the truck. Runs great, a little doggy off the line due to stock 2.73 gears ;(
Been doing some research on getting new posi unit and 3.73 gears in the 10 bolt. Should be fine I won't take truck to track or anything, just some john force burnouts here and there, lol
I know the new gears will wake up my truck.
On the other hand, those big brake kits from mc gaughys have had me mesmerized since they came out.
Give me your opinions on what I should do next, big brakes or new rear?
Either way, one will have to wait until at least late summer, if not next xmas.
Help me choose!