Would I have been better off not knowing?

Yeah, around here that is a mint car. You can almost count on doing front floor pans, quarters, trunk extensions, and trunk at a minimum.
For the pits you can smooth them over with metal2metal filler then sand flat. They have to be blasted to white metal and I will usually treat with ospho too as a second measure. If there is pinholes going through they should be welded. If its a large area of pits you may consider doing a patch.