Re: Help with my first gaming pc build.
1) Unless money is extremely tight, go for a 128GB SSD. It doesn't cost much more, and you'll appreciate the extra storage capacity. If you can afford it, you can buy 256GB SSDs now for well under $200.00 Stick with Crucial, Samsung, or Sandforce drives they are solid, and perform well.
2) Go with a full size case. A gaming PC, especially if you intend to over clock, requires a very high air flow chassis. Mid-tower cases don't provide that. Go with the Storm Trooper if you like that style, or the HAF 932 Advanced.
3) As for the PSU, it all depends on what you plan for the future. If you don't ever intend to purchase a second 660ti for SLI, or add any significant hardware, you'll do fine with a 500watt high quality PSU such as Corsair, Antec, or SilverStone. If you think you may want to add another card, then don't consider anything less than 850 watts.
What are you going to use for a back-up HDD?
HAF 932 Advanced / Corsair AX1200 / Asus Rampage IV Extreme / i7-3930K / H100 Cooling 4x120mm
16GB Corsair DDR3 / GTX 580x2 SLI + GTX 460 PhysX / SSDs Mushkin 240GB, Crucial 256GB, Crucial 512GB