Planning is half the fun

In the pump department you may want to look at the Swiftech MCP35X, which gives you rpm control and a good top out of the box. Very handy for finding your optimal noise/performance balance.

As regards blocks, I only have experience with EK and have no complaints.

In the fan department Gentle Typhoons are generally accepted as the best, but there have been some complaints about them making weird noises when undervolted. For balancing noise and performance, you may want to undervolt, either with T-Balancer or your motherboard. The Nexus Real Silent Basic is also a very good fan in its rpm range and has no undervolting whine, but in overall noise/performance GT's are probably better.

When choosing a reservoir, check that the res does not allow air to be sucked into the loop. Reservoirs with pump mounting may be noisier as the pump's vibrations are transferred to the case. For quiet, either suspend the pump with shoelaces or mount it on something soft, e.g. Petra's Gel Stuff.

Unfortunately it is very difficult to estimate what the best radiator/fan combination is for your particular needs and this is likely a matter of trial and error. Generally more rads would allow you to run your fans at lower rpm thus generating less noise. Ideally you would buy GT's that run at the right rpm (they range from 500 to at least 1850) so that you don't need to undervolt, but buying three or five fans to find out that they don't fit becomes expensive. Look into the fan comparison threads here, some of them are excellent and have youtube vids illustrating fan noise at different rpm. In theory you can also calculate your system's heat generation and heat dissipation in watts, but I am no expert at this so I won't even try.