RE: beechcraft stagger wing
Top Flite is making a kit, but it requires a 1.60. Nice plane from the looks. Vintage R/C Plans has a 1/6 scale set of plans that are very complete. Four large sheets that include a lot of detail and includes It is a 64" span model. Again though it requires a .70 to .80 engine. I would power it with at 1.2 four stroke. I would guess that you are looking at around a 48" span model for the 0.60 size.
I spent a lot of time eariler this year looking for plans, but my requirements were a minimum of 1/6 scale as I wanted to put a 1/6 scale P&W Wasp Jr. engine that I was going to make in it. I've put that idea on the back burner for now.
Another approach is to get a set of drawings from the San Diego Aerospace Museum and draw up you own plans. I've got a wireframe for the fuselage done in Rhino 3d using those drawings. Lots and lots of work. Hope I get to use it some day.
Don