It seems as though you're just buying things without really weighing up the benefits, reasons, etc. Not trying to be rude, so don't take offence at that!
Have you looked into what the capabilities of each of your components are, and selected them accordingly, or just randomly chosen some things that look good?!
The best thing to do would be to hold your horses for a short time, and really look into what you need, and what you want.
Water cooling - why? Is your system running too hot? Are you planning to overclock it to the point where it will be too hot? If the answer to both of those is 'no', then why would you want water cooling?
Of course, you could just want things like that for the cool factor - which is fair enough, but there won't be many people able to help you figure out what you need if it's just buying for buying's sake!