sounds pretty do-able. just keep in mind the extra money for eating foods like MEAT. and if you have your rail pass (one of them) already sorted, then you're sailing. i dont think its too pricey, but all the different rail networks require different passes.
just depends on if you go to any car part stores... though from what I hear, the worst places for window shopping (croooober, up garage, autobach) are all pretty out of the way.