Hey Tommy, congrats bro...
If you're going Hindle, the bang for the buck is so good, you may want to consider the full system (unless all you're looking for is the Hindle sound...). Keep in mind though you'll need to add the Power Commander or another system for remapping the FI system, so that adds to the cost.
Guess only you can decide if you're goal is sound or peak power...
Good luck.