I looks like a simple kit with the painting and rigging as the only possible difficulty.
Here is the office. I added the backrest I had removed for the PE set and used tissue paper for it and a pad for the seat as well. I don't know if they had a seat pad as the only picture I can find of a P-26 interior is the one in the Smithsonian, which seems to be lacking one. Oh well, my plane has a seat pad. The interior was painted aluminum, although the kit calls for interior green, as the production models were left unpainted,
More updates to come.
Steve