You should be fine with the cam for an '04. Don't think those problems became huge until the BRM motors in 05.5-06
Listen for a rattle/grinding at idle. That is the Dual Mass Flywheel going out. I'd stay away from any VW auto unless it is the DSG 6 speed, even then I'd try finding a manual. My gf's tdi/dsg does some strange things with the tune we just put on it, but it does haul a lot more ass now :woohoo: