pc for 5 boxing

[Shania]

Hello!

Looks like I am going to go for a new pc for myself soon! YaY!

5 boxing as usual.

Not much $$$ to use as I also need to buy my 17 yr old daughter a new box as well.

Mine I am looking at this:

Which out of these 3 will benefit me the most, or are they all kind of the same other then slight price differences

Intel Core i7 4790 3.6GHz (LGA - 1150)

Intel Core i7 4790K 4.0GHz (LGA - 1150)

Intel Quad Core Xeon E3 1271V 3.6GHz (LGA - 1150)

Graphics:

Gainward 4GB GTX 760 PCI <-- will this be enough to have least maybe high settings as a minimum ?

Memory: no real idea, quite a few different kinds: G.Skill Sniper 16 GB Kit (8Gx2) DDR3 1600 Memory

SSD: not sure differences, like Kingston V300 240G and Sandisk Ultra II 240G

Obviously I want decent fps, without lag/stutter when running around doing various things in crowded areas on x5 characters.

Suggestions, help would be appreciated.

Oh with memory, what am I looking at/for, in regards too?

1600/1866/2133/2400