Hey hows it going. I just built myself a new rig to do the same thing as you would like to do. (im also a college student) Anyways i have a smaller case than you so i chose a micro ATX board. Ill give you my specs.
MObo =Gigabyte GA-G33M-DS2R
HD =Seagate 7200.10 320 gig (2)
PSU = OCZ GXS 700 watt
RAM = OCZ DDR2 6400 5-5-5-15
GPU = 8600GTS
TV tuner= Avermedia TV tuner PCIe 1x http://www.aver.com/mpd/combopcie_mce.html
and a no name dvd burner
That tv is great toms did a review on it a few weeks ago. It plugs into a PCIe 1x slot so its new technology. Im running my CPU at 3.0 GHZ on the stock cooler and stock voltages its alittle loud but it works. I was lucky and got the new G0 stepping for my Q6600. If you are doing DVD editing lke AVI to DVD i really suggest getting the Quad. Its just awesome.
As for what you have i think everything will work great. I would suggest the Seagate and the quad core. The graphics card you have is very good and same with the mobo.