I7 920 Gaming Computer - Motherboard + Case advice!

Hi,

I'm looking to build a gaming computer based around the i7 920 Bloomfied. My main problem is, I'm not 100% sure which parts are compatible with which, so let me just give you a rundown of what I know and want.

-Not planning to overclock much for now, maybe in the future though
-Planning to run Aion on 1680x1050 or higher, and future games like Diablo III over the next 3-5 years

Current parts being considered

Intel Core I7 920 Quad Core Processor LGA1366 2.66GHZ Bloomfield 8MB LGA1366 4.8GT/S - $320 CAD

G.SKILL 6GB DDR3-1333 (I'm not sure whether to shell an extra $30 CAD to go from 9-9-9-24 to 7-7-7-12, does it help much?) - $127 CAD or $155 CAD (because of shipping from different site)

XFX Radeon 4870 HD 1GB 750MHZ (In future, will replace this with good single GPU and use this one to SLI/Xfire with my brothers 4870. But i think it's good enough for now, yes?) - $160 CAD

Corsair 750W TX750W - $110 CAD

Seagate Barracuda 7200.12 500GB SATA2 3.5IN 8.5MS 7200RPM 16MB oem - $52 CAD
*Just temporary, might get another one and RAID them into 1TB in the future. Not necessary now though.

Lg GH22NS50 Black 22X Sata Dvd Writer Oem - $27 CAD

Microsoft Windows 7 Home Premium Edition 64BIT DVD OEM - $116 CAD

Now... Important part, motherboard + case.
I have no idea what motherboard or case to use that will accomodate everything here. I'm hoping to spend about $150-200 CAD on the mobo. And maybe $100 CAD on the case? For the motherboard, I don't really need SLI/Xfire but I would like built-in fast wireless.

So any suggestions would be really helpful! Most importantly, the motherboard and case. And if you think any of these parts would be better replaced with something cheaper or better or both, please let me know =).

Thanks so much in advance!

Well if you want a HUGE case then yeah the 1200, otherwise the 900 or my favorite the 300 will do great for cooling as well.

P6T would be my first choice also.