My plan, if it will work, would be to surface mount the raceway along one side of the AS. I would not be using it except along the bottom of the walls and down the middle of ceiling.
I would cross over where the walls will be (completely stripped now) so conduit will be in wall until it gets to ceiling.
I would use their junction boxes to mount LED lights along the celing where the 12v
The same would work with the 110 along the walls. Just put in a 'T' and come up a few inches.
Sitting in there looking at it all and thinking of where my walls will be, I am not seeing anyplace where beding will be necessary.
The PO really did a 'job' on the electrical. Rather than take down the inside walls which are in excellent shape, I thought I would give this raceway a try.
I would be putting in all new 120v and 12v
. Everything from the original wiring would just get pushed back inside the walls (unless I can pull it out without damaging anything).
Just an idea...