Yes you are skipping too far ahead. Cam gears wont really benefit you much unless you have cams. Cams wont benefit you until you get another turbo that can actually put you over 300rwhp. Fuel rail is definitely suggested while upgrading your fuel, but there is no need to upgrade your fuel until at least 250-260rwhp. I think alot of people brought up good points and its up to you who's advice you go with. If you are on a real tight budget, do as people have said, gut your cat and then work on getting an exhaust and intercooler. Did you read the power primer that J&H gave you a link to? That will give you most of the answers I just answered for you.