Don't buy a blow off valve. You'll mess things up. These engines do not like them unless they are a recirculation valve.
Buy some suspension parts first. That should always be the first step.
Next get a Cobb ap, flash a stage 1 tune and run on it for alittle while. Then do a dp and go to stage 2. An intake isn't really necessary either but it's not like a bov where you want to avoid them.