You could go a couple different directions with your set up, you have a XSPC D5 / Photon 270 Combo listed. If you have 2 free 5.25” bays you could do something like this, they mount 2 D5 variants or DDC variants in a bay reservoir. Both are great setups for what you are doing.
You can get a couple different pumps mounted on this for you, I would select a set of MCP655 PWMs.
XSPC Twin D5 Dual 5.25" Bay Clear Reservoir - w/ Dual MCP655 Series Pumps Installed
http://www.frozencpu.com/products/16942/ex-res-421/XSPC...
or
This is pretty much the same set up as the XSPC but you can get this with a couple MCP35X pumps installed.
Maelstrom 5 1/4" Dual Bay Reservoir
http://www.swiftech.com/maelstrombayres.aspx
Both are good set ups. Or you can go this direction if you don’t want to have a bay res, I like this set up if you have room in your case.
MCP35X2
http://www.swiftech.com/MCP35x2PUMP.aspx
http://www.frozencpu.com/products/14961/ex-pmp-173/Swif...
You can read about both pumps below. I feel they are just about the 2 best pumps available now, both are PWM controlled and strong, I think the MCP35X has a bit more hydraulic power but runs a bit warmer. This guy does the very best reviews on the net, you can take to the bank everything he does.
Swiftech MCP-35X & Reservoir
http://martinsliquidlab.org/2011/02/25/swiftech-mcp-35x...
Swiftech MCP35X2 Pump
http://martinsliquidlab.org/2012/01/29/swiftech-mcp35x2...
Swiftech MCP 655-PWM-DRIVE Pump Review
http://martinsliquidlab.org/2012/12/25/swiftech-mcp-655...