At this point in time, I think it would be best to just get a knee deep into tuning with an intake, header, and exhaust combination. Research a bit on the different routes you can take toward tuning to see which one suits your needs, wants, and budget best. Then, you can decide which is best and go towards that route. I don't mean to be so vague but this topic is so vague that I can't help it. Research what you want to do and if you still have the dedication you had before and enough money, go for it.