HELP! Final Check on my First Ever Gaming Rig

Hi all. Really like this community. I'm about to purchase my first build, so excited!! I'd really appreciate it if you guys can screen my build and tell me if it's suitable. I live in Hong Kong so I cannot order the items online, I will be getting them at my local shop. Also, some parts has two options because I don't know which one to pick.

Purpose: I will be using this for gaming (D3/Guild Wars 2) and I want to run everything at max settings. Secondly, this will be my everyday computer.

Mission: I prioritize stability, reliability, and performance at #1. Secondly, I want the things to be quite because I have a roommate and my girlfriend HATES me playing ahahha so the quieter the build is, the less attention I gain.

Price really isn't a problem. But I don't want to spend over USD$1200. Anywhere between 800-1200 is great.


Processor
1. Intel Core i5-3450 Ivy Bridge 3.1GHz (3.5GHz Turbo)

Motherboard
2. ASUS P8Z77-V LX LGA 1155 Intel Z77
3. ASRock Z77 Extreme4 LGA 1155 Intel Z77

GPU
4. ASUS HD7850-DC2-2GD5 Radeon HD 7850 2GB
5. ASUS HD7870-DC2-2GD5 Radeon 2GB

Memory
6. G.SKILL Ares Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

Hard drive
7. Seagate Barracuda 7200 1TB OR 500GB

SSD
8. Kingston SSDNow V+200 120GB SATA III 6Gb/s 2.5 Inch Solid State Drive KW-S2120-4B

Power Supply
9. OCZ ZS Series 750W 80PLUS Bronze High Performance
10. CORSAIR Enthusiast Series TX750 V2 750W

Cooler (I'm open to recommendations here. Is there much benefit in water cooling versus the fan?)
11. COOLER MASTER Hyper 212 EVO

Case
12. Corsair Carbide Series 300R


THANKS FOR ALL YOUR HELP