Staggerwing drawings are out there, but I don't know if a complete set is, for sure. Drawing count I know of, is in excess of 4000 sheets. It's not for the inexperienced builder. One also needs exceptional skills when it comes to drafting and lofting. Many of the parts are drawn full scale on the original prints and have scale sets on them, with no dimensions on the part itself, requiring one to loft a new set of drawings as templates to build the part. Which in easy terms, means printing the drawing to an exact scale, then measurement off the drawing, and correcting the dimension from the scale and then generating the point on the new drawing. With some brushing up on my board skills, I could probably do about 4 drawings a week, working nearly full time at it, and I've got probably over 12,000 hours at the drafting board and on a tube doing CAD, over the years.
Additionally, there are some slightly exotic materials called out, that are going to be hard to source in small quantities....such as 18-8 Steel, Columbium stabilized. Fabrication will also necessitate having a milling machine and a lathe...lots of stuff I looked at had the note: Make From: and then listed a stock material callout, and machining notes and heat treat info.