I’ve found a New Home!

After searching for months, I finally found my new home to be. A Mercedes 613D and drives fantastic.
Right from the start, it was pretty clear that  it needed some renovation. The back wall was in very bad condition and probably needed to be taken out. But that did not bother me, since I really wanted an entrance at the rear. Actually, I wanted a tailgate and, as always in life, be careful where you wish for. Anyway, this was a 613d and they are becoming rare and quite difficult to find. So a bit of work did not matter , I thought.
When we started to work on the camper it was raining outside and all of a sudden also inside. OOPS! Water was coming in. Not a good sign
I took out  the shower, bed bunks and the bed, all located at the rear of the camper. To learn that not only the back wall was rotten. 
The next day, there was water in the upper part of the camper above the cabin, in the alcove.
Help,  eventually it turned out that the whole camper unit was rotten.
Since it would become my new home, I had no choice but to take out everything. Never mind, I thought. I will keep the frame and will put new aluminum sheets on the outside.  However, it turned out that the frame was pretty rusty and even rotten in some places.
O my gosh, how am I going to manage this? Are you ready? Pictures tell more than a thousand words.