Probably fuck off to some farmhouse somewhere where I can spend the rest of my days all the while tending to crops/livestock and gathering treasure. The fact that electricity would know longer be a thing (at least as much as it is today) wouldn't be great, but I would figure it out.
I would go for the secret government documents, feel vindicated/disappointed about my pet conspiracy theories, and then despair as there's no one to talk to about it.
Isn't there some stuff you should do like try to shut down nuclear reactors?
Go to the Chrysler dealership and grab a Dodge Challenger Hellcat, then drive that to the nearest Lancia Stratos, and take that home. Outside of that, I'll probably either be the happiest I've ever been, or succumb to madness. Possibly both?
I may or may not also go to the zoo and have my pick, then release the rest of the animals. Could be a monkey, could be a tiger, who knows?