My machine work alone was $860 including bearings, balancing, etc. Pistons and rings vary from $200 - $1000
Probably want to refresh the heads to, probably another $250-$300 for cleaning and valve job.
Budget another $200 - $300 for gaskets, etc.
Budget another $250 for misc. items you may need.
This is if you disassemble everything your self and give it to the machine shop.
If you decide to keep the cam, make sure you mark on how and where the lifters go!
I am currently going through a build with an 1987, but nothing in that car is stock except rods and crank.
Also get a credit card with miles and use it for this so you can take a "free" vacation afterwards.
Note: It may take months for the machine shop to get yours done, especially this time of the year.