Need help deciding on parts for a non-gaming system.

Hi,

I haven't built a computer in over a decade and a lot has changed since. I've spent the last two days trying to catch up on technology. I'm looking to spend less than $600 on everything not including the monitor. The only computer game I still play nowadays is starcraft broodwars.

I've used my friends build as a starting point but he's a big gamer. Can you guys tell me if some of these components are overkill for what I'm looking to do? Here's my build:

Approximate Purchase Date: within the week

Budget Range: 600-800

System Usage from Most to Least Important: I do a lot of programming, work on really large excel spreadsheets, watch movies, and photo editing from time to time. Although I'm looking to build a high end gaming system, I would still like to have it fast enough to last me the next 3-4 years.

Parts Not Required: Need everything

Preferred Website(s) for Parts: newegg, amazon, google shopping with reviews

Country: California, US

Parts Preferences:
ASUS P8Z68-V LX LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
Intel Core i5 3450 Processor 3.1 4 BX80637I53450
Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
ADATA S510 Series AS510S3-120GM-C 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD)
Patriot G2 Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) PGQ316G1600ELQK
OCZ ModXStream Pro 600W Modular High Performance Power Supply
Dell UltraSharp U2312HM 23inch Monitor with LED Details
SilverStone SST-RL01B-USB 3.0 Black Steel / Plastic ATX Mid Tower Computer Case

Overclocking: No

SLI or Crossfire: No

Monitor Resolution: 1920x1200

Additional Comments: I want to keep both SSD and HDD, and the 23" monitor but everything else is in the air. Also looking into some kind of video capture from my TV and setup some kind of DVR, and eventually setting up dual monitors. Will that on board graphics card do? If not, any recommendations? What are some good CPU fans? Also, any recommendations on cases? Thanks for any help you can provide.

edit: sorry if it looks all cluttered but I couldn't figure out how to use hyperlinks, bold, etc.