Is that the car where the front seat folds flat to the rear seat offering an instant bed? The "make out seat" was not at all endearing to parents of the time.
I would say go for it if the body is in good condition, the engine runs and the car drives well. Your drawbacks are parts for cars this old and kind of odd models. I am sure there are clubs that would know more about parts availability and such though.
Price is one thing I would certainly be concerned with. Haggle like a pro.
Let us know how it goes.