Modding a Thermaltake Tai Chi Setup

Hello, this is my first watercooling setup and I realize it's not the greatest. I'd like to modify the setup to increase it's effectiveness without spending a fortune. Any suggestions or ideas would be great. I've been looking at the pump and I think this may be the first part I need to change out, 84L/hr doesnt seem like enough of a flow rate. I am only planning on cooling the CPU with this setup. Thanks.

http://www.thermaltakeusa.com/product/Chassis/fulltower/tai-chi/vb5001sna.asp
Link to case

The radiator in there is pretty restrictive as well. I think you should upgrade the radiator first, then the pump, then the CPU block.

i personally wouldnt buy that case for its water cooling system as
almost anything > thermaltake

but i do like the case... they do make good cases