Help me with a 1000$ U.S build

I already have a reference GTX 680,H80i, HDDs, arctic silver v, 600W PSU, RIVBE, all the peripherals, a Win8 USB and a USB to install an OS 86. This will be a gaming rig. I want to custom watercool it, but I might just air cool and watercool later. I have a 60hz 1680x1050 monitor and a 144Hz 1728x1080. The 680 isn't pushing 144Hz.

 

I want a 290X to hash Litecoins while I'm away. I was thinking to waterkewl:

 

Water cooling:



blocks:
Mobo 100



Gfx 120



Cpu 160



rads
1x360 100 (Will one 360mm rad be enough?)



pump 100



Shyt: 100

bump

bump

http://www.frozencpu.com/products/20836/ex-wat-264/XSPC_Raystorm_750_AX360_Universal_CPU_Water_Cooling_Kit_New_Rev_4_Pump_Included_w_Free_Dead-Water.html?tl=g30c321s1310

wow your budget sunk from unlimented to only $1000?