If you were a failure you wouldn't be trying to figure it out. You’re getting way too much information at one time. Just go back to the basics. If it's getting gas, not the problem, if you have fire to the plugs, not the problem. My guess would be after sitting it's either carburetor got a little dirt, or the cap is damp, rotor needs cleaned with a touch of sand paper enough to make contact. Don't worry you will have it up and running in a short period of time.

Richard