First thing you should do is evaluate all the major systems, engine, brakes, suspension and steering.

Any order you'd like, as long as the engine is first. No sense in being able to stop and steer, if it don't GO.

I agree with HO428, a driver quality resto to start with. Once you get her reliable and on the road, address the other issues body, paint, interior...etc.

Things tend to snowball when you start into them, so keep a budget and priority list in mind and on PAPER.