Those are not even compatible with what you have
You have to have a new motherboard, but by this point build a brand new computer
Thermaltake powersupply = junk btw and how is an AMD cpu going to work on an old intel motherboard? Think it out :)
Eh, you don't need the SSDs take them off and bam, you can get the 2600k and i would suggest the 560 TI
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130623
To tell you the truth.. you really shouldn't look forward to SLI'ing because by the time you do want to upgrade, new stuff will be out and you get way better performance to dollar if you just buy a new video card. I'm just being realistic here..