everything would fit 2gether ok as far as i can see there are a few things i may change or look at...
its up to you on the ram side stay with 8gb and only if your using most of this quite often would i upgrade otherwise if your only ever using a max of 6gb your going to have the other 8gb sitting there doing nutting.
you gpu im not the best at these i cant tell you if there better ones out there or not but that will handle three monitors no trouble... how meany monetors are you planing on using and what sort of things are you doing on your system i.e. what games or photo editing.
not shore on sound cards 2bf i just use my built in one with a good set of speakers and it seems fine i am tone deaf tho so :/
the power supply seems high to me but i havent run all your components throw a power supply calculator so cnt say 2 exactly what one you need.
hard drives wise 512gb thats expensive lol $599 do you realy need that much for your ssd and if you do look at doing this Newegg.com - Crucial M4 CT256M4SSD2 2.5" 256GB SATA III MLC Internal Solid State Drive (SSD)
buy 2 of them for $500 and raid 0 them for a even faster set up
witch works out cheaper
and id be tempted to go for air cooling with your cpu as im not a fan of these pre built water kits much but thats just me