Re: New drywall over old drywall sounds shoddy?
Whether you strip to bare studs or overlay the existing is more of a personal call, both are acceptable. That being said, door trim and other trim details may be lost by an additional layer of drywall.
Considering that your house is 80+ years old, it's doubtful that it's insulated very well. Since you'll be rewiring, this would be a great time to strip do bare stud, rewire, reinsulate, update plumbing, etc. When all the repairs are done, then new drywall is installed.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!