I love the 500R! but if you really want to watercool, you should look into the 800D or 650D if you want a mid-tower, the 600T is ok for Watercooling as well.
Also, if you are "watercooling down the line" you should get a cheaper air cooler, instead of the H100, the 212+ is very good. And then do a custom watercooled loop later on
Ok so I think I finally have my list down and what I am going to order... Here goes..
That corsair is pretty usable across most platforms out.. I would re use this on another build.. I think it would be a solid investment.. atm at least.
Still needing a KB and monitor. KB easy.. but monitor I am going to need help with..
Gaming monitor obviously