IMO is KISS method is best…SnS EZ starts and never look back. You have the ability to do smartunes and if you pick a good early torque cam profile will work well with your tuner.
Bob
PS - Changing cams will also provide inspection of all the stuff in your cam chest.

 

New cams, new tuner $$$$ over $1000 easy in Canada. I've heard the S&S 583's are the closest match to a Harley cam, the SE255