Had to add a CD/DVD drive because that mobo doesn't have an IDE port, and I dropped the GPU. I don't know if I'm understanding this right, but I gather you don't need a cheap video card with intel's i series, they can do some graphic processing themselves.
Scrap that video card, it won't do much. Even my 7600GT that is over 5 years old (model wise) will out-perform that one by leaps and bounds and mine can be had for $15-30 or so. I would recommend that you wait and look for better deals on video cards. I am expecting there to be some within the next week or so. Check www.fatwallet.com often for updates. There have been some great deals posted on there. I will do the same and recommend you one if I see a deal.
You also JUST missed some great PSU deals on Newegg.
You don't want triple channel memory, AMD systems want dual channel 4GB (2x2 will be fine) and it should save you $25 or so. If you must have more ram find a 4GBx2 kit, I don't think it would be necessary though for light photoshop.
Are you suggesting that DDR2 be run in a DDR3 board? You need DDR3 for that board.
No, that is not what I am suggesting. I am suggesting he buys a 2 stick RAM set like the board uses, not a triple channel (3 stick) set like he has listed in the OP. AMD boards like pairs of RAM. Dual Channel not Triple Channel. It has nothing to do with DDR2 or DDR3