I have an i7 4770k, gtx 760, (not water cool, but a very "fany" build. Has never had issues. Watercool is kind of unneccesary imo unless you are running 25 bots & bitmining at the same time. Just buy a very "breezy" set up. I still only spent 1100.
Just look into building your own. I promise you will save money.