You are good, video cards are really easy to upgrade anyway. Install a custom config for Crysis too
Find custom drivers made by a guy. There was some recent thing where he asked for some Paypal donations and Creative told him to fuck off and closed everything.
Anyway he made drivers that worked so ask around for that.
Get that mobo and it depends what PSU brand.
I'd upgrade the HDD to a 640GB or 1TB, faster and more space for not much more.
Secondly swap the case and PSU for something else if you can, the 500w that comes with it is probably no good.
Seasonic or Corsair would probably be the easiest to find in your area.