STOP
STOP
STOP
You will first want to take out all the plugs. Spray either WD-40 or marvel mistery oil in all the cylinders.... aka spark plug holes and let sit a day or so.
Dont be bashful with the coating, but dont make a pond.
It will burn this off within a minute.
The rings can be goobered up and will score the cylinder walls. This will help eliminate that. Drain a quart of oil from the pan, and add a quart of new oil to the normal fill, at least lubing that cam.
..... then proceed with the others comments, add techron, check the other fluids. Start and let idle for 5mins, slowly take around the block and listen & watch gauges. Thermostat can get stuck closed. If the temp climbs to high, shut off immediately & let cool.
I would only put 500 miles on it before changing the oil.
good luck & listen to her.