GIGABYTE GA-X48-DS4 ATX Intel Motherboard
Intel Core 2 Quad Q9550 2.83GHz LGA 775 95W Quad-Core Processor
OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory
Antec Nine Hundred Black Computer Case With Side Panel Window
COOLMAX CUQ-1350B 1350W Power Supply
Tuniq Tower 120 Universal CPU Cooler 120mm Cooling Fan and Fan Controller/Heatsink
LG 20X DVD±R DVD Burner w/ SecurDisc Tech Black SATA Model GH20NS15
SAMSUNG Spinpoint F1 750GB 3.5" SATA 3.0Gb/s Hard Drive
Currently tracking at 1200 beans, my budget is about ~2000, so we have some wiggle room. I do not need a GPU.
My questions:
1) Is that mobo as good as it could possibly be?
2) Is that processor as good as it possibly can be (note: if the next better processor costs like 500 bucks more for negligible gains, I will probably stick with this one)?
3) Also mobo related: Is it a mistake to go with a DDR2 RAM mobo over a DDR3 RAM mobo? I am not so schooled in teh RAMz.
4) Also looking for other tower recommendations. I kinda like the one I have listed. Also note I do not want to break the bank over a tower.

My keyboard and mouse glows blue, why not the whole fucking machine?