I don't know much about liquid cooling, kind of just threw that in there thinking it might be useful. Any better suggestions I should take a look at? I have been playing BF3 on Ultra Settings with the 580, so I guess I didn't see any reason not to just keep that card, but you're right, I could up that to a few 690's or something in SLI.
Do you do editing for more than 6 hours a day? If not you won't notice any difference with that cpu. Those things are barely anymore powerful in practice. the only reason those cpus should be used for is professional purposes. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
If you aren't a professional that is the strongest I would get.
That's fine. Well if you are doing design for more than 5 or 6 hours a day, then that 5-10% extra speed means more income. So, yeah I think you should go with it, it will pay for itself in few months tops.