Finally got a Dart, been sitting a while...

Welcome aboard. Nice ride!
Well, your options range from complete tear down because of the unknown state of the engine, to fill it and crank it. But you already know that. Question is, do you feel lucky?
I honestly don't know what I'd do. I'm pretty sure I would do a lot more inspection before I decided. I'd probably pull the valve covers, intake, pan and maybe heads?
Smarter people will chime in. Good luck!