You shouldn't focus on what you need to lift for your pump, it is all in the foods you eat before you step on stage for prejudging.
My protocol is this:
1 snickers bar 30 mins before I get on stage
1 big gulp of SciFit Nitrox
Infusion
1 big gulp of SciFit Creatine Infusion
A couple of big gulps of Glycerol starting ~30 mins before I get on stage until about 5 min before.
1 very very small sip of gatorade ( Granted I have been water depleating since fri afternoon and have not taken a sip of any water for a very long time, I need to put a little of something in my system before I go on stage or I will cramp)
This is a tough thing to get right I have played with alot of "combinations" in the offseason to put together something that works for me, you should do the same.
Taking all this in I need to do very little for a "pump" as a matter of fact I couldn't do much but a couple of pushups and some curls, hit a few poses and was ready last time I competed!!
I hope this helps you out. Best of luck in your competition.