I would:
Pull the spark plugs and squirt some engine oil, Marvel Mystery Oil, 3-In-1 oil, or WD40 into the cylinders and spin the engine over using the supplied starter - this lubes the rings against the cylinder walls - eases friction/load on the starter.
At the same time, disconnect the inlet fuel line to the fuel pump and connect a vacuum gauge to the f/pump inlet. This will telll you if the f/pump diaphram is in good shape and pump can create a vacuum and you can run a long hose from a gas can. No vacuum, then you weill have to set a gas can higher than the carb inlet and gravity feed the carb.
Attach a spark plug to #1 spark plug wire and ground the plug electrode and connect a timing light to the #1 wire. While cranking, check timing. If t/light lights, good spark. Timing happens at the right time, initial timing is set.
Pour a half cup of fuel into the carb bowl vent to add fuel, replace spark plugs, externally charge battery, check all fluid levels, fan belt tight, choke plate is closed - GO FOR IT!
Once engine is running and no leaks, good oil pressure, and thermostat has opened up and engine has ran for about 10-15 minutes, you can assess the engiune and rest of the systems.
Gas tank will more than likely need dropping and cleaned if not replaced, radiator shop can cook it, and change every fuel hose about the fuel line. Then change oil & filter, fan belt, and coolant along with coolant hoses and thermostat.
Snowball Effect comes to mind. Enjoy the event.