WC setup help.

I am not new to computers by any means but I am new to water cooling. I could use some help in this setup. Here are my specs.

corsair 800d case
asus rampage 3 extreme
core i7 950- eventually a 980x
3 4gb patriot ddr3 1600
2 xfx 6970's will be 3 eventually
2tb wd black, 1tb black
corsair 1200 watt psu
lite on blue ray burner

I am looking on frozencpu to configure parts for the system. I am wondering if I can get away with one closed loop going through one 360 rad and one 140 rad. I think I will go with 3/8 id tubing and not sure about the rads. Looking at black ice. I also dont know aobut the res. Should i go with a bay res or a cylinder? Here is what I have so far.

Part # Product Description Qty Price Total
ex-blc-772

EK ASUS Rampage III Extreme Full Board Cooling Block Kit - Nickel (EK-FB RE3 - Nickel) Hot Item!

Select G 1/4" Fittings (Qty. 2): 3/8 x 1/2 Compression Fittings ($13.98)
$153.97 $153.97
ex-blc-861

EK Radeon HD 6970 VGA Liquid Cooling Block - Nickel (EK-FC6970-Nickel)

Select G 1/4" Fittings (Qty. 2): 3/8 x 1/2 Compression Fittings ($13.98)
Select an Optional Backplate!: EK-FC6970 Backplate - Black) ($27.95)
$148.88 $297.76
ex-tub-448

Feser Crossfire / SLI Multi Spacing Fittings $12.95 $12.95
ex-blc-719

EK Supreme HF Universal CPU Liquid Cooling Block - Rev 2 - Nickel (Sockets 775 / 1156 / 1366 / 939 / 940 / 754 / AM2 / AM2+ / AM3)

Select G 1/4" Fittings (Qty. 2): 3/8 x 1/2 Compression Fittings ($13.98)
$93.93 $93.93
ex-rad-156

Black Ice GT Xtreme 140 Radiator - Black

Select G 1/4" Fittings (Qty. 2): 3/8 x 1/2 Compression Fittings-Black ($17.90)
$97.85 $97.85
ex-rad-109

Black Ice GTX Xtreme 360 Radiator - Black

Select G 1/4" Fittings (Qty. 2): 3/8 x 1/2 Compression Fittings-Black ($17.90)
$132.89 $132.89