I think sharing my experience might help someone.
The only thing I did that required creative thinking was the fuel issue. Not knowing, or trusting the old gas required a work around. I disconnected the rubber fuel line from the fuel pump intake. It was about 8 inches long, with the other end connected to the steel line running along the frame to the gas tank. I purchased a longer piece of the same diameter hose, and submerged it in a gas can full of new fuel. [That was actually the last step]
First I replaced the spark plugs, changed the oil and filter, and checked the coolant. Radiator was about half full, but still green. There was some creepy looking white stuff that appeared to be growing in there, so flushing and replacing still need to be done - Later. I filled it up with fresh water, for now. The battery was replaced.
With the coil wire removed I cranked the engine a couple cycles. I did that about 4 times waiting a minute in between. I can't say I knew what I was doing, but figured gently splashing some oil around inside the engine would be kinder than just going for it.
Hooked up the coil wire and had my friend use a squirt bottle to spray some gas into the carburetor. He stopped, I cranked the motor and it ran for a few seconds until that fuel was gone. Waited a couple minutes (again, gently with something we care about) and did it a couple more times.
With the fuel lines full of fuel I gave it a little gas with the accelerator pedal, and my favorite old GTO roared to life. Man I love that sound. I didn't do anything crazy with the gas pedal, just slight increases in RPM's. Let it run for a few minutes, not enough for it to get hot, and shut her down.
Came back an hour later, and without priming the carb, the car cranked right up. Man these are great engines. I don't know what kind of a fool lets a car like this sit for 5 years (Me of course) but we gently brought it back to life, and it sounds like it never missed a beat.
Three flat tires, so no test drive today. When I find a cheap set of 14's we'll find out about the rest of the mechanicals.