Yes, but do it properly, strip and clean the playfield , do all your steppers the whole nine yards, just don't get it running. do it right and then play the hell out of it.
when you get bored of it, sell it get another and start again.
P.S. I learned this from a pinball God . Change out all your Fuse holders. Bally's have notoriously bad fuse holders and can give you issues you don't need. Change them all first thing .
Have fun. Old Bally's are the Best !
Sir Brian of Ortonville