Should I try to start it

I would bar it over by hand to make sure it isn't seized. Then unplug the coil and crank the engine for 30-45 seconds to get oil through it. Then hook the coil back up, dump some fuel into the carb and try to fire it.

Changing the plugs, lubing the cylinders, checking valves, compression test, etc are all a good idea. But in my past experiences, it wasn't ever necessary. And I've fired up many engines that have sat for decades.