$1500-1600 i7-930 build, 3D work+gaming-no quadros or firegls

APPROXIMATE PURCHASE DATE: end of april - beginning of may BUDGET RANGE: $1500-1600 including 23-24" monitor and Windows 7

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: 3ds Max and Rhinoceros - architectural rendering and modeling, AUTOCAD, Adobe CS3, able to play fps games

PARTS NOT REQUIRED: keyboard, mouse, and speakers

PREFERRED WEBSITE(S) FOR PARTS: newegg.com, microcenter COUNTRY OF ORIGIN: USA

OVERCLOCKING: No SLI OR CROSSFIRE: not now, could be possibility in the future

MONITOR RESOLUTION: 1920x1080

ADDITIONAL COMMENTS: in need of sherpa, 1st time building, not that worried (yet)


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CPU:
Intel Core i7-930 $200

CASE options:
Wondering if these cases will fit all the stuff below and keep everything calm and cool.

Antec Three Hundred $60

Antec Three Hundred Illusion $70

PSU options:
Do I need modular with the Antec 300 cases?

Antec EarthWatts EA750 750W $105 (85 after rebate)

OCZ ModXStream Pro OCZ700MXSP 700W $100 (70 after rebate)

CORSAIR CMPSU-650HX 650W $120 (110 after rebate)

MOTHERBOARD:
I've been looking at ASUS and Gigabyte boards exclusively, but EVGA is also ok with me. Don't know what features I really need here, but budget is in the $200-300 range, probably don't need super high end but not sure.

GIGABYTE GA-X58A-UD3R

GIGABYTE GA-EX58-UD5

ASUS P6T SE

ASUS P6T

ASUS P6T Deluxe V2


MEMORY:
I'm not so sure if I need high frequency RAM here, so far I've been more interested in low Cas latency and good timings but I don't really know what I'm talking about! Also want to make sure my motherboard can support me dropping in another 6 GB and utilizing all of the 12 GB with every slot occupied.

G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 $170

Crucial 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1066 $150

GRAPHICS CARD:
Here I'm open to waiting for the Geforce GTX 470 @ $350. I've read some places that ATI's consumer cards are less stable in 3D programs like Rhino and Max but I'm still keeping them on the table. Either the 5850 or the 5770 if it plays games like Bad Company 2 well.

HD: I'll get it when its in stock
SAMSUNG Spinpoint F3 HD502HJ 500GB $55

DVD Burner:
ASUS $24

MONITOR:
SAMSUNG 2494SW Glossy Black 24" $220

or one of the ASUS offerings

Any and all advice is greatly appreciated on my end.

CPU/Mobo: i7-930 and Asus P6X58D Premium $510 w/ CPU. Didn't notice the MC mention.
RAM: G.Skill Pi Series 3x2 GB 1600 mhz CAS Latency 7 $180. These are faster and not much more expensive.
GPU: HD 5870 $420 or the new nVidia if it's better and not super expensive.
HDD: Seagate 7200.12 500 GB $55. This is just as fast as the F3. And it's always in stock. And usually has free shipping, which is a toss up with the F3s.
PSU: Corsair 750W 80+ $90 after rebate. Or the Antec listed. 750W is preferred if you want to Crossfire later. You also do not ever "need" a modular unit. The best cases are all bottom mounted cases, so modular is not even useful.
Case: HAF 922 $90 after rebate. The 5870 is a very tight fit in the Antec 300 Illusion. I wouldn't recommend the regular 300, as you pay the same for it with shipping, yet the Illusion gives you two additional fans.
Optical: Cheap SATA DVD burner $24

Total: $1,364 plus whatever monitor you want.

The Gigabyte board has a lower power phase than the Asus. The Asus is also a uses slightly newer technology. I'm also of the opinion that the Asus board is higher quality.

To be honest, I have no idea. Generally, I try to stick the Asus in the build whenever possible to maintain quality (which translates to longevity), but I don't think anyone would be disappointed with the Gigabyte.

That's also something I can't be positive about. I can tell you that I've got an Antec 900 with a Corsair 650W, and had no trouble with the length of the cables. I doubt that there will be any issues.