Sounds like the first boat I bought. A 1978 Imperial almost like yours. If it has an OMC Stringer then your pretty much just buying the trailer and the hull. Those things are worthless, for the most part. If you do happen to get something with a Mercruiser you might be in a bit better shape, i'm still kinda a new guy and don't know that much yet.
One more thing. Make sure you get the registraition and title and a bill of sale from the owner. I made that mistake.
Pics are good, nice boat.
Check the oil and other engine/outdrive fluids.
Check the transom for rot.
Lots of boat deals out there these days.
Its unlikely you'll find something perfect but the less you have to spend the better. Get as much stuff as you can with the boat, life jackets, anchors, rope etc, it adds up if you have to buy new.
That green bayliner was shot.!