I suggest that you take one of those Brodak kit guides and your Pinto Grey Ghost* plans, and see if following the Brodak guide only for the Pinto kit will do the job. If it will -- go! If it won't take a pencil and make notes, changes, etc., until you're satisfied that it will work.
Do that a few times, and you WILL be a scratch builder.
* Edit: I confused threads there...