I got a 2010 Touring in 2017. First thing I did was get some Rivco handle bar risers to bring the bars a bit closer. (I'm 5'9"). Then a Tachometer.
Later I started going nuts with add-ons. A longer clutch cable (a little more play from the handle bars being brought forward), but not necessary.
After about a year, getting used to how everything worked I remapped the ECU. Still later I replaced the silencers with TORS, and got a Ram-Air filter, which eliminated a bunch of stuff under the tank used to route the air from the old filter under the seat. Then I re-mapped again with the "NELS-TORS_RAMAIR-K&N" map found on here. Been happy ever since. I mean I can get from 80 to 110 mph before I can let loose from the throttle. (Secondary Butterfly valves are at 100% open all the time with that map, I think.)
Put in some Easter Beaver headlight relays at first, too. Noticed some burned, bypassed wires form the previous owner and didn't want to take a chance on that happening again.
Tried a solo seat for awhile, but went back to the original.
Still a heavy thing at standstill, but sweet on the street! I'm 69 but going to hang onto it as long as I can hold it and back it without falling over! I had a buyer two years ago, but could NOT get myself to let it go. Nothing I ever get will compare to a Rocket III. I was after a Classic, (bigger rear tire, tach, and double head lights) but got too good of deal on this Touring to pass up.
Have fun going for it!