Hi again, you can't really go wrong as far as watercooling goes with something like this:
Thermochill PA120.3 rad either with three 120mm fans in pull or six 120mm fans in a push/pull config. Which fans depends on whether you're going with performance or noise in mind and whether you're using a rheostat.
G5 Storm CPU block if you can get one of Swiftech G4 version named the ‘storm’ is currently the best performing waterblock I believe. The Cooltechnica MP-05 LE is also a good contender.
Danger Den Maze4 Acetal GPU block is widely available and a great performer. There is also the new Cooltechnica MP-1 which is similar or maybe slightly better performer than the Maze4. If you're running SLI then you can get two Maze4 low profile GPU blocks, which blocks exactly depends on what motherboard you plan to use as the spacing varies between the two PCIe16 slots. You can also get GPU waterblocks which cool the memory as well however they add restriction and ramsinks + low speed fan offer similar performance.
As for the pump - a dc pump will be much more convenient. Something like an Iwaki or Eheim pump will be robust and probable last longer but also be much bigger, dump more heat into the water etc I've had a couple of AquaExtreme50z (otherwise known as mcp600) and have been very happy with them. You plug it straight into your PSU and it only draws around 8 watts, it can also be overvolted to 13.8v resulting in increased performance although I wouldn't recommend doing this.
Other bits - I've always used a T-line as I personally find it easier but there are a number of reservoirs around, no doubt DangerDen make some. Use 1/2" tubing as anything smaller is too restrictive, tygon and primoflex is popular although fairly pricey. You can try DangerDens offering or alternatively buy some from B&Q and the likes. You'll need two 3/8" BSP barbs for the thermochill rad and a couple more if you have a res (size depends on res). I'd buy a handful of hose clips to secure all the connections. Don't use tap water as it can corrode and cloud watercooling systems, De-ionized water is also a no-no as it corrodes the blocks. Distilled water would be your best bet, you can additives if you like - some work better than others. There are also fluid replacements such as fluidxp, PCIce etc but they are expensive and results vary.
Cheers, Nick.