The CVO 110" motor is kind of tricky; head and piston combination already have CCP about 190psi. IIRC, the CVO 110" motors are fitted with the SE255cams which are great torque cams with an early intake close of 25*. That just doesn't leave many cam only upgrade options as there are not many cams with an earlier intake close that would boost CCP to the mid 190s which will increase performance.
If the bike is still in OEM trim. The first thing you should do is install a good fuel management system like the TTS Mastertune, Power Vision of even the SEPST. Install the SE air filter and a good 2:1 exhaust like V&H Pro Pipe, Bassani Road Rage II or Supertrapp and then get the motor tuned; there is some power to be coaxed out to that stock motor. That might be enough of an increase in power to keep you happy for a while.
The next step would be to have the heads worked; the 110" heads are often maligned but in the hands of a good head porter, they can be massaged to perform well if matched up with the right pistons and cams.:hii