Some more pictures after the dividing wall was taken down.
In the first picture you can see the auxillary fuse/relay box for all the extra stuff. It is just behind the drivers seat up there on the pilar.
Where the shelves were there was a bit of rust which I have painted with special rust inhibitor and then will coat with some primer. I plan to put in quite a bit more of sound deadning in the rear compartment. There is a big difference in noise level with the wall gone.
The cavities will be covered up, maybe with some nice wood work to make it a cozy place to stay.
Should I move the front seat further forward so you can get more rear legroom?
Ignore all the clutter in the last picture.