Nice, you won't be disappointed with a change of exhaust thats for sure!
Not so much stock anymore, it's a shame Harley don't do a lot of aftermarket parts for the bike as much as a sportster for example.
My current mods include:
Firebrand exhaust
Inverted mirrors
Customaces light fairing
Gloss painted all belt guards and covers
Blacked out top fork
Gunfighter solo seat
I will be adding my own side plate mount and fender delete soon, along with a tank lift, fp3 and air intake hopefully!
I don't think the tallboy seat is what you need, I changed to a solo seat and I'm 6'1 and it's fine!