Liquid cooling system:
The best liquid cooling is DIY. I will help you put one together if you would like but I would never use a kit.
The Stacker 832 is SLi certified and has better airflow. It is a much better choice.
You can not buy an overclocked CPU. The overclocked settings are stored in the motherboard's BIOS and not the actual CPU.
Why do you need an HSF if you are liquid cooled? The Tuniq Tower and Noctua NH-U12F are two of the best CPU Coolers available. That Intel one is not even close to the same level as them.
Ditch the 500GB and grab another Raptor and put them in RAID1.
You have no need for a 1100W PSU. Not even close.
I7 Extreme 965
Corsair 1kW PSU
Asus Revolution p6t6 Deluxe
12 GB ddr3 Dominator 1600mHz
2x Velociraptor 300GB hd Striped
2x WD 1tb drives mirrored
Dual 4870x2's Crossfire
LG blu ray burner
all bundled up in an HP blackbird case