New gaming PC, need some advice

I'm currently looking at building a new pc some time in april (when ivy bridge/600 series is released).

This is what I have currently in mind:

Processor: i7 3770k (Ivy Bridge)
Mobo: Undecided
Graphic Card: Radeon HD 7850 (or one of the 600 series depending on price/performance)
Case: NZXT LEXS-001BK Lexa S Crafted Series Mid Tower PC Case - ATX, mATX, Baby AT, Black
Cooler: Corsair CWCH100 Hydro H100 CPU Liquid Cooler - 120mm Fan, LGA775, LGA1155, LGA1156, LGA1366, LGA 2011, AM2, AM3
Ram: Corsair CMZ16GX3M4A1600C9 Vengeance 16GB PC12800 DDR3 RAM - 1600MHz, 4x4096MB, Non-ECC, Unbuffered
PSU: Corsair CMPSU-750TXV2 Enthusiast Series TX750 V2 Power Supply - 750 Watts, ATX, 140mm Fan, 80 Plus Bronze, SLI Ready, Active PFC
Hard Drive: Undecided

As you can see, im undecided as to the hdd, and mobo. I'll most likely wait till april before I decide on the mobo, as for hdd I'm not sure what I'm going to do. Should I buy an sdd drive (their damn expensive), and take the two 5400rpm hard drives out of my current computer (their seagate, bleh)? Or should I just buy a new 1TB 7200rpm hard drive?

I guess another question is will my case be big enough for the h100 (which is pretty big).