You might want to get an 8x card later on though.
His 9800PRO IS 8x what are you talking about? Plus 2 gigs right now isn't really needed....at the current point I believe there's not an insane difference between dual channel 1gb and 2gb only because there current applications don't really gang up on it, but I suppose if you can afford it then go ahead.
But keep in mind, just because you have the money and can buy the most expensive latest hardware...doesn't mean you technically have the best machine...meaning depending on the combination of hardware you can get just as fast a machine without going top of the line. Currently top of the line is mainly prepared for the future, but there's not a real insane need for them. My 2.7GHz can beat out an AMD64 because we aren't in a 32bit environment yet and most applications aren't using 64bit either...but still the AMD64 is quite powerful and the only reason mine currently would win is because it's so high OC'd, but I don't think it'd beat out a 2.5GHz 64, or it may come really close. So that's something to think about. You can get a powerful machine without getting top of the line.