Sounds like you know what your after and have put a fair bit of thought into your parts list.
Not sure of your location, but if your in Canada then you'll save a ton on shipping if you buy your stuff from
DazMode Canada's water cooling specialist store.
For coolants distilled water with a Kill-coil(Pure Silver Wire as natural biocide) and DazMode's Protector for corrosion prevention and lube for seals and pumps.
Being a Canuck I always try to buy from a Canadian source first.