A lot of times folks in your situation just fire it up and it works. A little prep increases the chance of sucess though. I would

- pull plugs and put a little oil in each hole. If its still on the stand, roll it to distribute the oil around the piston tops.
- Fill with oil (high zinc, diesel engine oil would be good).
- Pull distributor and prime the oil system with a drill and rod
- Roll it over by hand while running the drill pump
- If it turns over OK, assemble and fire it up.
- Normal break in for a flat tappet cam calls for running around 2000 RPM for 20 minutes.

Added insurance would be to pull the manifold and inspect the cam for rust. If it was coated with assembly lube and stored in a dry place, it should be fine. If you aren't sure, worth having a look. If you do pull the manifold, have some cam break in lube handy and give it a good coat before firing.