First thing I'd do is find a way to keep my name out of the news.
I'd quit my job, give them 30 days notice or something so they could backfill.
I'd acquire a large parcel of land away from, but not tooo far away from a metropolitan area. Fences out of sight with cameras and razor wire. (lot of bad experiences with tweakers back in the day.)
Construct massive shop. My own skunkworks. Fill it with milling machines, welders, measuring equipment... maybe staff it with a guy for the tedious shit I can't stand. And god the tools... mmmhmm.
Decent house. Something nice, solidly built, with a view and entertaining area, but not to gaudy or humungous. Solar/wind power, self-sustaining. Bunker underneath.
I'd basically spend my time traveling and tinkering in the shop. I have car projects I want to do, just never enough time, it seems like. I'd probably slowly loose my connection to society and go insane, ultimately building some kind of atomic super monster, with freeway onramps for arms, and a soul as black as coal...
Oh, and investing and charitable work. I really like the idea of promoting STEM to children, maybe some scholarships too. Hopefully I could put something together that would survive into perpetuity, paying for kids college from it's dividends.