It depends on what your intended goal is. It seems obvious you are not going for a 'factory concurs restoration', which is a good thing if you are on a budget.
Are you going to daily drive it? Weekend fun cruizer? Mild trail rig?
Lots of things that can be done, these are great rigs to 'make your own'.
Bj's offroad is a good place to start to see what types of things are available. They probably have the 'most complete' selection in one place and their web site is pretty easy to use.
The engine is probably a 360 or possibly a 401.
If it's an automatic, the transmission is a TH400. Great 3 speed tranny.
Automatic will have a quadratrac transfer case. Good case but certain parts are no longer available.
It should have d44 axles front/rear. Good axles with plenty of parts available.
Overall a good combo for a fun weekend car or trail rig. As a daily driver if you have to go long distances the gas might eat up your wallet.
So you should be able to just freshen up the drive train. Tuneup/fluid change and not spend too much money.
That means you can put a little cash into a spring lift. Your springs are probably pretty tired anyways. Some decent shocks and bigger tires. That will make it a fun driver and decent trail rig.