RE: I.M.P scale
None of the ImpScale planes I have came with any type of instructions. Yes, the Bf109 and civilian bipe have very very detailed plans, but they still leave a lot of decision making to the builder.
Rebuilding a plane is far from building a plane from plans. A plan build is knowing about wing fit, all the stuff needed to build for a radio (IE servo location, how to set them up etc), fuel tanks & sizes as well as locations, engines, engine mounting, and a whole metric crap load of stuff that is mostly learned by doing.
The idea of spending upward of $400 on an IMPScale kit with little experience kit building is a bit of a risk for me. I would recommend picking up maybe a Top Flite, Sig or Midwest kit first, and building that first.