I use DCC Concepts Flicker free 2 for all my lighting along with TCS/ DCC Concepts Function only decoders. DCC Concepts will be releasing a new product soon again for coach lighting which is right up your alley.
Just about everyone of my coaches has a 4 function decoder for lighting. DCC Concepts FF2 also has pick ups and all the bits you need plus different LEDs to suit your era.
To give you an idea here are some photos and videos of full DCC Control. This one has 4 functions controlling main cabin lghts, bar or down lights, red tail light and kitchen lighs
As you can see in this shot the Pullman table lamps are off.
DCC control of coach lighting
in DCC Help & Questions
Posted
Thats amazing!