Right OK:
CPU: Don't bother with the i7 3770, instead save yourself some money and go for an i5 3570K. Great CPU, is pretty much the sweet spot gaming CPU out there. You won't notice a difference between the i5 and the i7 in gaming. If you do get an i7, make sure you get the 3770K, not the 3770 - the difference is the K chips are multiplier unlocked so you can overclock them easier.
Motherboard: OK, but not the best. Gigabyte GA-Z77X-UD3H or Z77X-UD5H would be a better choice.
Memory: You want dual-channel, so that either means 2 DIMMs or 4 DIMMs (3 DIMMs will only run in single channel, so you lose out on performance). I'd recommend you go for 8GB via 2x4GB and you want 1600MHz or faster (Corsair Vengeance is good RAM, as is G.Skill RipJaws-X).
You could go for 16GB via 4x4GB or 2x8GB, but 16GB is overkill. If this is for gaming, I'd stick with 8GB.
SSD: I used to own that SSD. It's great (but mine died after a year of use, but Crucial were very prompt in sending me a free replacement), but it's getting old now. There's faster stuff out there: notably the OCZ Vertex 4 (which is what I have now), the Samsung 840 Pro, and the SanDisk Extreme (which I also used to own). All are faster than the Crucial, so go for one of those. 128GB is big enough, 256GB would be good though.
Hard Drive: Go for a Caviar Blue or Black 7200 RPM, 1TB or 2TB. Seagate also make some good hard drives which are 1TB and spin at 7200 RPM. Caviar Reds are server drives really, so unless you plan to run them in RAID, I'd get a Blue or Black or a Seagate Barracuda.
Video Card: GTX 670 vs HD 7970: 7970 wins. If you're doing any sort of editing though, I'd probably recommend you get the 670, otherwise, the 7970 all day long.
Case: I'd actually get the NZXT Phantom or the Phantom 410. Other good cases are the Fractal Design Define R3 and R4.
Power Supply: Take the Corsair unit, but I'd go for a TX 650 V2. It's not modular, but if you get a good case you should be able to hide the excess the cables behind the motherboard.
Optical drive seems a bit expensive. If it's a Blu Ray-RW, just save your money and get a Blu Ray-ROM. When are you ever going to be writing Blu-Ray discs?
OS: Home vs Pro: I'd probably go for Pro, reason being is that Home is limited to 16GB of RAM (including RAM on the graphics card), whereas Pro isn't. So if you get or upgrade to 16GB of RAM in the future, Pro would be the better option.
Monitor: Seems good.
Mouse: Yes, good. I have the G400, it's great, the G500 is even better still.
Keyboard: Looks all right if you're prepared to spend that much. I get why people have gaming mice, but I never get why people have gaming keyboards, but if you like it, go for it.
Thermal Paste: Good.
Other Stuff: So long as you have a screwdriver, some pliers and a pair of wire cutters, you won't need any other tools, so I wouldn't bother with the toolkit.
Hope this helps!