I'm getting ready to start my first PC build. The system will be used primarily to edit/batch process raw camera files in Canon Digital Photo Professional, Photoshop CS4 and/or Lightroom. It will also be used to edit HD video in AVCHD format maybe using Sony Vegas software. I will also use the system to create huge PowerPoint presentations containing hundreds of photos and/or video clips. It is not uncommon for me to edit photos, listen to music, surf the web, answer e-mail, etc. all at the same time.
I am not a gamer, although I do play America's Army on occasion and would like to play more games in the future (don't know what yet), maybe Flight Simulator, etc.
I'm not sold on all the parts, so I am looking for good suggestions to further tweak the system. I fully admit to being a total newb at all of this, therefore I need all the help I can get. Here's what I have configured thus far...
Case Antec 1200
CPU i7 920
Motherboard Gigabyte GA EX58 UD4P
Memory G.Skill ddr3 1600 6GB (3x2gb)
GPU Sapphire Radeon HD 4870
Hard Drives 2x Western Digital Black 1TB in RAID 1
Power Supply Corsair 650TX
Fan/Heatsink Xigmatek Dark Knight
DVD/CD Drives 2x Sony Optiarc Black
Operating System Vista 64 Bit Premium
Total cost at Newegg is $1465.87 (before rebates, tax, shipping)
I do have a couple of other questions...
1. Is the motherboard appropriate for what I am wanting to do? Would the UD3R serve me equally well?
2. G.Skill and OCZ Gold are about the same price...is one about as good as the other?
3. I know nothing about GPU's, I have narrowed my choices to the card listed or a GTX 260 or maybe even 2 HD 4770 in crossfire (would this make any difference for me?)
4. Is my power supply big enough?
5. What OP system do I need to order? Can I get the OEM (cheaper)? The websites state it is for system builders.
I know that I'm asking for a lot of information, but I really do appreciate everyone's expertise. Thanks!

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