Mmm...
I would highly recommend that you buy a new triple channel kit for a 1366 motherboard.
I'm not entirely sure what this is, please explain further.
Also I would not use 3 way sli as a selling point. The thought of doing so is ridiculous. I also do not see why you are going with the 930 when the Phenom II 1090T is much faster and has unlocked multiplier. It would also let you take advantage of the dual channel kit you have now.
The part I by far spent the most time finding was my processor. I searched and searched different benchmarks and specs and everything. At the first sight I had though the Phenom II would be faster. After doing a bunch more research I found it wasn't. Here is a good example AnandTech posted:
http://www.anandtech.com/show/3674/amds-sixcore-phenom-ii-x6-1090t-1055t-reviewed/9(Although the 930 is not previewed in this article, the 920 is. The 930 is better than the 920 so you can still see)
I would also recommend that you do not buy a 1000w power supply. That is simply ridiculous. Instead I would go with a corsair 850w or some such item.
While It is rather high for what I need. I do plan on upgrading to larger, much better video cards such as the soon to be out GTX 580 which will for sure suck power.
EDIT:
Having owned the antec 1200 I do not feel that it is a good choice. It is very heavy and large; it is almost immobile. The cooling power isn't as great is as one would guess. There is not really any support for watercooling and at one point fans can only do so much. Beside that it is horribly loud so you will need a high performance headset to go with it...
I would suggest a mid-tower solution or at least a different full tower.
I purposely looked for steel because I don't plan on moving it. Steel is sturdier than aluminum, and although heavier, I have no intentions of moving. If I do have to move it I'll get a cart my father uses at work for the stairs really.