waterblock - I have no idea about that one. Personally I would go with an Apogee XT or Heatkiller 3.0 and save some coin. Both are known high performance blocks on i7.
pump - good choice. But I would go with either the XSPC Acrylic Dual 5.25in Reservoir for Laing DDC or the XSPC Acrylic Reservoir for Laing DDC instead of that EK res, since they both combine a high performance fluid end for that DDC pump and also accept either 3/8" or 1/2" barbs. The stock pump doesn't have replaceable barbs and they are 3/8". And going this route will neaten up the inside of your case. I have the second one I linked (the res top) and it's really good and it's easy to bleed and fill.
Radbox - The new Rev 2 radbox is made of plastic and is fragile. The older original model was made of steel and much sturdier. Unfortunately they don't make the steel model any more and PTS is sold out on them too. You might want to see if you can get some aluminum stock and just make yourself some standoffs instead. If you do go with the radbox, make a couple of standoffs for the end of the rad furthest away from the radbox to keep from stressing it in case you bump the rad or something. My plastic rev 2 radbox is in a drawer because it's so fragile.
Points to think about: Barbs, you will need them. You can go regular barbs such as the Bitspower/Fatboys or you can go compression fittings. If you go compression fittings, be sure to get the correct ones for the diameter and thickness of your tubing.
Generally you won't need a chipset cooler unless you lived in Death Vally and have no A/C to cool things, or are going to run your PC in extreme overclocked (ie double the stock CPU frequency), air is generally good enough for chipset. Same with RAM.