Atlanta,
Your description sounds similar to how Clutchee described his 80 ('96 or '97?) sounding when he pulled into GSMTR last year. His situation was the rear pads had never been changed so it was metal on metal contact. The solution was new pads and rotors. This was all bolt off-&-on tasks so it was fairly simple. The only challenge that I recall getteing noted was the Allen wrench required to take the calipers off.
Additionally, I have purchased replacement pads and rear rotors for my wife's 80 ('95) at NAPA in the past as general maintenance. It seems like the rear set of rotors cost less than $120, so they are available and somewhat reasonably priced. Also, I don't recall the parking brakes presenting any challenge when swapping out the rotors (even though they are "drums inside rotors").
My recommendation is to go ahead and do it your self; provided you can give yourself a couple of days for questions & answers as you complete the work (it is a few hours work not a few days, but learning eats time frequently). Good luck.