EDIT: BTW they do make Dual powerhouse cards like AMDs Radeon R9 295X2 that are cooled by both water and air and cost over 1200$ each and in crossfire with a 3960x the system pulls around 1250+ watts. If that is what you want I would suggest a case that supports 2 PSU's I know the corsair 900d supports 2 PSU's and is a phenomenal case in design and look. Then you could do 1 ofAMDs Radeon R9 295X2 cards that will give you crossfire off the bat. Then if you decide to add another 1 of AMDs Radeon R9 295X2 cards for QUADFIRE you could add a secondary PSU to power the additional power needs of the second card.\
For A psu this silver rated Roswill 1600watt PSU will set you back 350$ Rosewill HERCULES-1600 1600W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS SILVER, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply.
12 5 star reviews and you will never run out of PCI-E power connectors since it has 16 x 6+2-Pin connectors.
I usually don"t like PSU's with more then 2 12v rails. But when one has 110amps and the other has 50amps it becomes less of a issue.
Cooler Master Silent Pro M2 - 1500W Power Supply with 80 PLUS Silver Certification and Semi-Modular Cables 3 mediocre reviews. 369$
Corsair is releasing a 1500 watt platinum PSU for 449$ on the 27th of this month according to newegg.
I would probably go with the Roswill PSU lots of overhead power at your disposal for added components.
As for the CPU cooler 2 h80i's should be plenty and easy on space and allow for some overclocking. If your setting this all up in a Huge case like the Corsair 900d then 2 h100is would fit and give you a little more cooling power...but I do not think a whole lot more then the H80i's.
As for a monitor look at LG's Beautiful 34" UM65 21/9 IPS monitors Ones sells for around 850$ or so and has 2560x1080 res and the higher end model UM95 has 3440x1440 resolution along with great color management. They are like having up to 4 monitors with the hi resolution model. here is the website if you want to look at them. http://www.lg.com/uk/ultrawide/UM95.m http://www.lg.com/uk/ultrawide/UM65.m
If that is too large they do make a 29" 2560-1080 res model for around 500$ they all have IPS panels. and good to great color reproduction. But with 21:9 ratio you get the real estate of basically two monitors, plus they look better then having 2 monitors. Someone said it was closer to 21.5:9 ratio and that seems correct. company's round down #s in most cases so you get at least whats on the box and not less.
I cannot wait to be able to get a 3440x1440 21:9 monitor....right now I do not have 2 dimes to rub together but they look to be great for everything work, entertainment and GAMING:) I know I only have 2 4gb EVGA GTX 770 Classified cards in SLI but with that many pixels the less you need Anti aliasing. Also instead of having 4 times as many 1080p pixels to push like a UHD 3840x2180 they only have 2.4 times the pixels of a 1080p panel. Also you can watch a widescreen movie without the black bars on the top and bottom on a 16:9 monitor as a bonus.
2600k@4660mhz CM Nepton40XL 16gb Ram 2x EVGA GTX770 4gb Classified cards in SLI@1280mhz Stock boost on a GAP67-UD4-B3, SBlaster Z powered by TX-850 PSU pushing a 34" LGUM95 21/9 3440-1440 IPS panel. Pieced together 2.1 sound system