Sell or salvage?

I own a 96 chevy Lumina. To get it up and running it will require a new rear bumper, replacement rear right tail light, and a completely new muffleer exhaust system. I have a standing offer for 700 dollars as is but also am in dire need of a drivable car. Just curious if it would even be worth the effort. Runs great though and I can do the repairs myself and get parts from a junkyard cheap. Sell or salvage? And a repair estimate as well. I appreciate any and all info