The brake controller is plug and play (the button or dial needs to be mounted.are you sure? installation cost for brake controller is $252. Doesn't sound like simple plug and play...
The trailer control module ( what is the lumen package) could be $250.
The lumen tow package is a great value (my opinion) as it is essentially what you get from the factory, and cheaper than you could buy the parts individually, look at my post when I did it for this was available.
The FDRS programing changes could also be done via forscan with the correct settings.
I did did confirm this by adding and removing the tow programming via FDRS and seeing the changes made in the asbuild.
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