That's a good choice for a tuner.
I'd suggest contacting Hemifever Tuning - Sean Powell or Diablotoona - Johan Mangs, for a custom tune.
Sean did one for my 2014 6.4L 2500 and it was awesome. Johan wrote the tune for my 2006 Chrysler 300C SRT8 and I've been traction limited in that car ever since.
Both those guys have websites. All you have to do is google them. They will have you install one of the canned tunes in your truck, then have you log with the programmer while driving. Then you email them the log files and the last tune written (the canned tune) and they put together the custom tune. They will email that to you, you'll put it on the programmer then load it into the truck. You might do the log/email logs/download tune/log thing a few times. They will send you very easy to follow instructions on the process.
You can also search for a Diablosport trained CMR tuner in your area and get the tune done on a dyno but that's gonna be a lot more expensive.