Check out this guy here near me. He gets projects in from all over the country.
I am sure you are already aware but there is a huge demand for these now...
I know you are going to do the work yourself but thought the website and before/after pic's are quite interesting to look at. When I drive by his shop, he always has a bunch of them in the yard.
Vintage Airstream Restorations & Repairs - RV Repair Shop in Heber City
Larry, Stephanie Park City, Utah
2017 31SL King, 8K axles, Disc Brakes,17.5 Goodyear H tires,BU Camera,5.5 Onan, Heated HT pads, Two Uniguard Awnings, Slide Toppers, 2000w PSW inverter