A few questions about my gaming rig?

[zcosmin]

Case: Coolermaster haf x
CPU: Intel CPU Core i5 3570K Quad Core IvyBridge Processor Retail
GRAPHICS CARD: Sapphire Radeon HD 7970 AMD/ATI Graphics Card - 3GB
MOBO: Asus P8Z77-V DELUXE Intel Z77 Socket 1155 Ivybridge Ready Motherboard
PSU: Corsair CMPSU-1050HXUK Professional Series Silver HX 1050W Power Supply (PSU)
COOLER: Corsair Cooling Hydro Series H100 Watercool CPU Cooler for all Intel & AMD
HDD: 500GB Western Digital Caviar Green Hard Drive - HDD
SDD: OCZ Technology 64GB Vertex 4 SSD - Solid State Drive - VTX4-25SAT3-64G
RAM COOLER: Hyper x ram cooler
RAM: Corsair Memory Vengeance Black 8GB DDR3 1866 MHz CAS 9 XMP Dual Channel Desktop
OD: PIONEER DVR-S19LBK DVD Writer, SATA, Labelflash, Retail
CASE FANS: 2 200mm fans and 2 120mm fans

Please answer these questions:
1)Should i downgrade the psu to 950-850W? (i will over clock the cpu)
2) Should i get a i5 2500k instead of a 3570k? im going to overclock it
3)is all my components compatible?
4) What do you think about my pc ( opinion )
5)if there is anything i could improve, please tell me
6) what is the load temp of 3570k on h100 (if you know)
7)is the pre-applied thermal paste good on the h100? if not recommend me a good thermal paste

Thanks

 

[Mousemonkey]

This topic has been moved from the section CPU & Components to section Systems by Mousemonkey