Something else you might consider is going with the LT headers and keeping your stock exhaust. The LT headers will add a nice throaty growl and have the added benefit of giving you more hp. Then if you decide you want more sound later, you can then do the exhaust.
By the way, if you have an automatic, you will want to have AFM tuned out. It can create an annoying drone with after market headers and exhaust.
None of the videos do the sound justice compared to when you hear/drive the car in person.