[Build Help] Looking to build a ~$1200 gaming PC, would like some help with the parts

PCPartPicker part list / Price breakdown by merchant / Benchmarks Type|Item|Price :----|:----|:----

CPU | Intel Core i5-3570K 3.4GHz Quad-Core Processor | $189.99 @ Microcenter

Motherboard | ASRock Z77 Extreme4 ATX LGA1155 Motherboard | $134.99 @ Newegg

Memory | Samsung 8GB (2 x 4GB) DDR3-1600 Memory | $49.00 @ B&H

Hard Drive | Seagate Barracuda 1.5TB 3.5" 7200RPM Internal Hard Drive | $79.99 @ Newegg

Hard Drive | Sandisk Ultra 120GB 2.5" Solid State Disk | $79.99 @ Newegg

Video Card | MSI Radeon HD 7850 2GB Video Card | $209.99 @ Newegg

Case | Cooler Master HAF 912 ATX Mid Tower Case | $49.99 @ SuperBiiz

Power Supply | Enermax 750W ATX12V Power Supply | $98.63 @ NCIX US

Optical Drive | Asus DVDE818A7T/BLK/B/GEN CD Reader, DVD Writer | $25.97 @ Newegg

Monitor | Acer G235HAbd 23.0" Monitor | $129.55 @ CompUSA

Operating System | Microsoft Windows 7 Home Premium SP1 (64-bit) | $98.98 @ Outlet PC

Keyboard | Gear Head KB2500U Wired Slim Keyboard | $8.98 @ PC Mall | |

Total | Prices include shipping and discounts when available. | $1156.05

This is the machine that I've put together on PartPicker. here is the description of what I've looking for. Due to some financial rearranging, I may be able to get the money and start building by the end of the month, so wanted to get an idea for what parts I'm looking for.

I've got a few major questions:

• I've never looked much into motherboards, cases, or power supplies before, so any help there would be very welcome. For these parts I pretty much sorted by rating and looked for the best rating with the lowest price (or in the case of the psu, the largest output with the lowest price)

• I would like to try and get this below $1000 if possible, but this prices should work for me. If dropping the price would be a significant drop in power, I'd rather have the power.

• I can't afford 2 monitors now, but as soon as possible I'd like to multi-monitor. I don't really need more than 2, and use it more for the extra space than extreme gaming

• I don't plan on overclocking now, but it is a very good probability I will in the future.

Any comments and help will be greatly appreciated.

EDIT: Updated the build a bit. Dropped down to a 750W PSU, upgraded graphics card to the 7850, traded SSD for one a little bit cheaper, changed brand of RAM (suggested by a friend, close in price but better performance according to him). I may have found somewhere to get Win 7 for cheaper, but I'll keep the newegg listing for now.