Did you get anything from DTek?
I've got my virtual loop put together by the way. Choices and arguments:
CPU: Heatkiller 3.0 LT
First off, it looks great. Second, it performs great and should be in the less-restrictive area.
Rad: Feser Xchanger 240
Performs a little less or more, depending on the review, as a Thermochill 120.2. I've got room for 240 without having to make weird adjustments. Costs €20 less than the Thermochill rad.
Will be used with medium-CFM fans (~30-55 on fan controller).
Tubin': 3/8 Masterkleer
I think 3/8 is a good compromise between managable tubing and high flow. Masterkleer stuff should be decent except maybe for some clouding. Costs a fraction of Tygon tubes too
Pump/res: XSPC Dual bay res + pump
Clicky
Got it dang cheap, if it runs like crap I'll just get a new pump and res

Res looks pretty decent though, and the pumps specs should be pretty OK for just a CPU, even if it is an i7.
Fittings: no-brand 3/8 screw fittings
It's some home brand from the shop I'm buying at, they are a lot sleeker than the Feser screw fittings, so no space issues should occur. I prefer screw over barb because it gives me a (false) sense of security.
Keep in mind that I'm only cooling the CPU. Even if this will turn into an expensive hobby, I think this should be a decent set to start with, and it should easily beat the crap out of my Xiggy