Why W7 Professional? For gaming I don't know how it would benefit any, why not save a few bucks and get Basic?
As for the PSU I imagine a Corsair 750 could handle the load, I don't know of to many companies that make PSU's like Corsair does. If you plan to upgrade in the near future with another card or something then I could see recommending a 1000W but for the time being don't worry about it.
Why 120gb SSD? All that should be going on the SSD is your operating system so that's a lot of money put out for better boot times. Some people like SSD's but I just don't care for them right now because I don't see a very reasonable pay off. Their wonderful if you're a bencher but if you're just playing games and not competing in the OC game then there's no need for one at all let alone a 120gb.
The monitor, I don't know if that's a good price or not because I don't know much about 3D monitors. I do know that I got an Acer of similar resolution that runs 75Hz and it's an LED and it cost me about $235USD, $800 seems to high to me, hell my 42 inch samsung 1080p LCD tv didn't even cost me $800.
I'm sorry that I'm not throwing actual parts out there for you to check out but I am throwing somethings out there you should consider evaluating. Remember bigger =/= better.