New System Advice Needed

[RouTaran]

Thanks for the info Wiz

Here's the updated Specs (all Prices in CAN Dollars)

Case:
Gigabyte SETTO 1000 ATX Tower Case - No PSU, MicroATX, 2 x USB 2.0, 7x 3.5 Drive Bays, 4x 5.25 Drive Bays
$107.99

Mobo:
Asus P7P55D LE Motherboard - Intel P55, Socket LGA1156, Core i5, 2133MHz, DDR3
$159.97

Processor:
Intel Core i5 750 Processor - 2.66GHz, LGA 1156, 8MB L3 Cache, Quad-Core, Lynnfield, Retail
$219.97

Ram:
OCZ Dual Channel Platinum 2048MB PC12800 DDR3 1600MHz Memory (2 x 1024MB)
$62.99

GPU:
EVGA GeForce GTX 260 Core 216 Superclocked Video Card - 896MB GDDR3, PCI Express 2.0 x16, SLI Ready, (Dual Link) Dual DVI, HDTV, VGA Support
$219.97

HDD: RAID-0
Seagate Barracuda 7200.10 Hard Drive - 750GB, 7200RPM, 16MB, Serial ATA-300, OEM
$69.97 x2 = $139.94


NEW
DVD Drive:
S203-8576 OEM :: Samsung SH-S223C_BE DVDRW Drive - 22X DVD+/-R, 12X DVD-RAM, 16X DVD+R DL, 12X DVD-R DL, 8X DVD+RW, 6X DVD-RW, 48X CD-R, 32X CDRW, SATA (1 lbs)
$40.99

PSU:
ULT-LSP650 :: Ultra LSP650 650-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty (4.9 lbs)
$59.98

Removed
CPU Fan

Sub Total: $1,011.80
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I have 4 questions for all the experts.

1. I found an ANTEC EarthWatts 650W PSU but it costs $89.99
   Compared to my currently listed 650W PSU, is the $30 difference worth it?
   
2. I found a BFG GeForce GTX 260 OC MAXCORE 55 896MB PCI-E w/ Dual DVI, HDTV-Out for $189.99 (After Rebates)
   Keeping in mind that I do plan to go SLI in the near future, is the the performance I get from the eVGA Card I have currently listed again, worth the $30 difference?
   
3. I want longevity from my system. I believe that the new i5 core and the Socket 1156 mobo is the way to the future and this will give me the ability to scale and upgrade when the time comes. Am I wrong in this thinking?
   Will it make more sense for me to stay Socket 775 and save more money?
4. I only have 2 GB of RAM at the moment. Again for scalability, is it going to be efficient to go with a 64bit OS right now with the idea of adding more RAM down the line. This system is primarily going to be for gaming so is this a good option?

Regards,
Rou'Taran

[OS-Wiz]

PSU:
ULT-LSP650 :: Ultra LSP650 650-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty (4.9 lbs)
$59.98 <-- POS, *NEVER* go cheap on a PSU, *NEVER*, get the Antec. If you will go SLI, get the Antec Signature 850W (that will really pop your cork on price LOL.

I want longevity from my system. I believe that the new i5 core and the Socket 1156 mobo is the way to the future and this will give me the ability to scale and upgrade when the time comes. Am I wrong in this thinking?
Will it make more sense for me to stay Socket 775 and save more money?

IMHO the i5 S1155 is Intel's way to try to get some of the low-end cpu market away from AMD, not sure of its longivity. Just my opinion.