Howdy Davo! Welcome from East Texas
Yes the 3 K&N's will do her up proper - I believe HansO thought you meant the under seat K&N stock replacement filter which in fact adds no benefit - He will have a proper tune for you
Welcome from Brissy @DAVO - If your in Melbourne why is you country flag USA? @HansO May be able to help with a tune probably only for the PCV as i believe the ECU is locked on current models.
Another Aussie welcome to a fellow Rocket rider. You should get about an extra 40hp with the intake and full exhaust change, think you like your new ride now.....it only gets better.