I'm guessing you've already read the safely modding thread, (I sincerely hope) and trust me, this is the perfect forum for that kind of question...
You will need a way to scan for KR, before anything else... Keeping Uncle Chip away is your first priority. Headers, colder plugs, a good tune, and a pulley drop is your next step, then you can work your way up.
There's plenty of people on here that have the advice you're looking for. The only thing you might have a problem with is the tune, Overkill seems to be the only one that can tune 06+, and you'll need an in-car tune for the bigger mods.