Will my configuration work?

hi, first time computer builder here... i'm going to lay out all the components i plan on buying, and was wondering if you could tell me if it would work or not (enough pci slots, compatible cpu/mobo, etc.). any help would be appreciated.

mobo: gigabit ga-ma785gmt-ud2h am3
cpu: amd phenom ii x4 965 black edition
gpu: xfx hd-485x
hdd: samsung spinpoint f3 hd1035j 1tb
ram: g.skill 2x2gb 240pin ddr3
media drive: pioneer bdr-205bks
*sound card: ht omega claro+ 7.1
case: antec nine hundred black steel atx mid tower
psu: corsair cmpsu-750tx 750w atx 12v
*tv: hauppauge wintv 1850 mce kit

i think that's about it. hopefully i have a complete setup there. i was also wondering about a wireless-n card, preferably with bluetooth. is that built into other components? cause i could find very little when i searched online.

*indicate components that won't be bought initially to help with cost, but will add on later.

i built a computer very, very similar to this on hp's website, and the cost was about the same, except theirs came with 2gb more ram, and windows 7 pre-installed. just curious as to why that sounds too good to be true....

i guess i should mention this will (hopefully) be hooked up to a 32 vizio sv320svt, and will be running ubuntu 10 (final build released april 29th). will the hardware work with that, or should i plan on buying windows 7?

i plan on using this computer to watch blu ray movies, and listen to lossless music. i guess what's called a htpc.

if you suggest other hardware, please let me know as well. i want to do this correctly.

sorry about the length and seemingly endless questions, but i really want to learn how to build computers! haha

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