or the ram check to see if it the newer updated sticks or the older 1.65v sticks. intel cpu memory controller looks for 1.5v ram. some of the older 1600 ram is 1.65v. on newegg and parts picker the 1866 gskill arires and lp cosair running the same price as ram you picked out.
For gaming and very little (if any) editing, I'd go i5 and get a powerful single GPU instead. Not sure how soon you plan on purchasing, but with the GPU market as volatile as it is right now, I'd hold off a month or two for a nice non-reference 290X or 780/780TI.
Ed do you have a reason to go with 1 780 over 2 760 in sli? I thought you get better performance with 2 cards in SLI?
Preference, performance the sli 760's will beat a 780, but that will not be the case in every game , as the would have to be optimised for sli. However the 780 will constantly pump out high fps no matter what game you throw at it.
One year down the line it allows you to sli (if needed) ... rather than replace both 760's