Getting the cabinet work done should be easy enough - I know of an excellent shops within a day's drive of your area. Getting whatever electronics you desire installed there kind of depends on what they are and your wants in that regard. Certainly doable and there are folks that handle that sort of thing all the time. I'm not familiar with those floor plans, so can't make any educated guesses.
I know of RV specialist shops in nearby Celina, OH (Cruising America RV) and Decatur, IN (From Trees To These), that could surely do that sort of thing for you.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL