Kidnotorius

I just picked up a 88 se for 900 dollars two days ago, when we got to it, the rear breaks were seized up. So we just popped off the pads and opened the rear bleeders, and we made it back home with it. Right now its at my friends house, we got the old calipers off with a lot of work, I am waiting to go pick up some used calipers from mazmart, and i should be able to fix that. The engine feels good once i get it going, but it does not idle very well. What are some things I should check on a rotary car this old?