With a $2500 budget I would go SSD. If not then I would stick to the WD Black.
I have the Lian-Li A70B it's a Great case but slightly more expensive than the CM.
Newegg.com - LIAN LI PC-A70B Black Aluminum ATX Full Tower Computer Case - Computer Cases
You should be happy with GTX 285's in SLI
The Corsair 850 is Top-Notch
The OCZ Platinum is Great Memory, if you want better then wait until the OCZ Blade Series DDR3 2000 PC3 16000 is back in stock.
Newegg.com - OCZ Blade Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) Desktop Memory Model OCZ3B2000C9LV6GK - Desktop Memory
The True is the King if you don't mind Lapping it. If I had to pick a different Heatsink I would go with one of these.
Prolimatech Megahalem for Intel Socket 775 /1366 Products Model: MEGAHALEM [MEGAHALEM] : Performance-PCs.com, ... sleeve it and they will come
I have the Lian-Li A70B it's a Great case but slightly more expensive than the CM.
Newegg.com - LIAN LI PC-A70B Black Aluminum ATX Full Tower Computer Case - Computer Cases
You should be happy with GTX 285's in SLI
The Corsair 850 is Top-Notch
The OCZ Platinum is Great Memory, if you want better then wait until the OCZ Blade Series DDR3 2000 PC3 16000 is back in stock.
Newegg.com - OCZ Blade Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) Desktop Memory Model OCZ3B2000C9LV6GK - Desktop Memory
The True is the King if you don't mind Lapping it. If I had to pick a different Heatsink I would go with one of these.
Prolimatech Megahalem for Intel Socket 775 /1366 Products Model: MEGAHALEM [MEGAHALEM] : Performance-PCs.com, ... sleeve it and they will come