SSD seems unnecessary for budget HTPC, and the more you cram in there the more power it will use and the hotter it will get.
Also you could probably get away with 4 GB RAM. Maybe start with 1X4GB and upgrade with another stick if you feel like it will help?
Finally, you might try an HTPC OS like Mythubuntu or XMBC. I would guess that these will run faster without all the Windows crap.