Here is a link to my build. There is an excel sheet that list the items used, the cost at the time and the vendor I used to purchase each item. It is a similar setup to what you will be building. There are also 3 pics of the system.
http://www.overclockers.com/forums/showthread.php?t=691556
Pics can be seen here as well at the bottom of this forum chain
http://www.overclock.net/t/1198936/lga-2011-new-build-help-suggestions
You will need to make some decisions on what you want and how much you want to spend for all the greatest and latest. My build is an 8k system to give you a form of measure. You are running in the range of 5K if you are going the Tri-SLI route on your system - minus the watercooling. There are a lot of smaller items people tend to forget that will add up like fans, power connectors, cables, screws etc.
MOBO:
I like to tweak my system, so I absolutely love the ASUS Extreme Rampage IV flexibility and modifiability in Mobo's. But there are so many great boards out there.
PSU:
For PSU Power you can use this calculator ..it gives you a pretty good estimate after you enter your system components you intend to use.
http://extreme.outervision.com/psucalculatorlite.jsp
Remember when choosing a PSU you want to add some power so it operates in that sweetspot and not be stressed. Kind-of like a car where you will not be driving it at full speed all the time... otherwise you will kill the engine, well the same principle applies to a PSU.
The PSU I used in my system is the Enermax 1350w. This PSU is modular and can fully support 1600W though it is not rated as such but it has been stress tested at 1600W by many in the business online. It has a lot of future proof room as well. Keep in mind this is specific to my custom build.
GPU:
Note that the memory is less on the 680 than the 580. If possible I would hold out for the third version release of the 680 later this year. The real 680 (full power card) has not been released yet. Partly due to the hype of the 79XX that was short lived. Don't get me wrong either card is still not a bad choice though. At the moment the GTX is better with its unmatched CUDA technology.
RAM
I personally like Corsair and G.Skill for RAM in todays market. You can't go wrong with these guys.
SSD: view the benchmarks in links below.
OCZ SSD has been up there when it comes to great SSD's as well as Intel. Here is one of the sites I use that has been pretty much on the money when it comes to benchmarking.
http://www.harddrivebenchmark.net/high_end_drives.html
You can choose what is your top priority category here if needed on the various tabs http://www.videocardbenchmark.net/
Hope this helps...