Well, upon looking at the case, I think the simplest mounting solution would be to hang the radiator off the back of the case with the barb end facing up.
There looks to be enough room between the top of the case and the top of the fan mount to drill holes to let the tubing into the case.
Don't take what I say as gospel though, I have never seen the Spedo in person and I'm only going on a quick guesstimate of the space to work with.
If I am correct in my assumption Your bets bet would be to get an XSPC RX360 radiator, Sidewinder Computers - Supplier of High Quality PC Modding and Cooling parts
has them for cheap as their shipment had some paint damage, something that can be fixed with a quick rattlecan paint job.
Just use a gutted 120mm fan attached to the one side of the radiator to attach it to the case using some bolts and then put fans on the outer facing side of the radiator to facilitate cooling.
Here is an example of what my former setup looked like which should give you a better idea of how I'm telling you to hang your radiator.
techPowerUp! :: Case Modding Gallery : 2008 Black Aurora Updates
For the rest of your parts, Laing DDC 3.2 MCP355 pump, along with the XSPC Reservoir pump top, A Swiftech GTZ with the i7 mounting kit, 1/2" ID 3/4" od tubing, worm drive clamps, distilled water, and Petras PT-Nuke PHN additive.
Unfortunately with that budget GPU cooling is out of the question, however should you decide to go that route in the future, all the other parts will handle that addition just fine.