Id buy me a nice piece of property and move onto it. Then id more than likely purchase some rental properties and invest the rest. Live off what the rental properties brought in and not touch the rest for a good while.
Im not sure I would quit my current job but I would stick to strictly 40 hrs or less at it.

Ethical behavior is doing the right thing when no one else is watching - even when doing the wrong thing is legal. Aldo Leopold .. (except when it comes to trailer tags)