CPU: The next step-up from the 3570K is the
i7-3770K (<-- link, damn this font! And as you said, yarr, the 'K' is the most important part). I wouldn't recommend stepping up though since it's basically the same exact chipset/dye but at a lower clock rate, which--obviously--you can clock up to yourself since, IMHO, the whole point of getting a K-series Intel IS to overclock and the 3570K purportedly overclocks better than the 3770K variant.
SSD: I've never heard of that particular SSD (or brand) being very good in the memory or storage drive departments. If I was going to be brutally honest, I would cancel that order and grab a deal like the Crucial M4 128GB which is on sale for nearly the exact same price BEFORE any rebates and gives you a little more wiggle room in terms of space and is definitely on a more reliable design and from a more reputable SSD/memory manufacturer.
Crucial M4 128GB
Motherboard: Tough call. I honestly want to say that a Z68 could be useful for you, but if you're not video editing, the only other major feature that the Z68 totes is SSD caching and I believe that doesn't work on SSD partitions over 60-64GB in size--and the practicality of SRT doesn't apply to all its users anyway.... A lot of reports suggest that a motherboard with the Intel P67 chipset will serve you well, as they are supposed to overclock noticeably better than the Z68 chipset (someone slap me if I'm wrong here). Lemme throw a couple options your way to help you decide.
ASRock P67 Extreme4 (totes two PCI-E 3.0 slots and other goodies, plus better overclocking capabilities)
ASRock Z68 Extreme4
RAM:
I don't know why you need 16GB over 8, but I'm ordering eight gigs of this RAM when it comes time to upgrade and all of the eGO tech-pros, benchmarks and reviews show its solidity in terms of performance/price. You could just order four sets of these 4GB sticks and still save yourself a lot of cash and add mucho performance with its slick timings and great voltage. Try to grab the 2x4GB version if it's
ever in stock.
SAMSUNG 4GB DDR3 1600
TL;DR footnotes:
*i5-3570k is a great choice, the next step-up is unnecessary and its stock clock rates can easily be achieved (and more easily surpassed) with the 3570K. Make SURE the suffix is 'K'
*You're probably going to be looking at a Z68 or P67. Z68 has Smart Response Technology / SSD caching and Virtue (video editing), two benefits that may not be all that beneficial to you. You can save money/overclock better using a P67. Both chipsets will utilize USB 2.0 or 3.0 (FYI, these two are backwards and forwards compatible with one another anyway, but a 3.0 peripheral/external will run at 2.0 speeds in a 2.0 port and 2.0 will not run at greater than 2.0 speeds even in a 3.0 jack). Most modern motherboards come with more than enough PCI slots and the likes to sate most gamers, unless you're a hardcore enthusiast looking at matching more than two GPUs with all of them being really beefy
*Motherboards have pins that will only accept certain types of RAM and have a 'memory standard' (that doesn't really necessarily mean you can't go outside of the standard. A motherboard with Memory Standard DDR3 1866 will work just as well with quality sticks of 1600 / 1333, etc.). Memory also has a set number of channels, but these concern the CPU (which I still wouldn't worry about letting that be the deciding factor for your memory purchase, say if your CPU accepts triple/quad channel, as it won't be noticeable in most real-time applications and most certainly not in gaming
*Don't bother with 16GB RAM -- stick to eight gigs for gaming (as that's all that will be recognized by 64-bit Win7), if you don't need to run any majorly memory-intensive applications like media editing, programming, F@H etc. If you do, disregard this note
