Add one more thing: stop the NSA per the Snowden leaks. Everything else in the leaks failed that test. Using a solution strong against the strongest attacker is worthwhile to people wondering how good various solutions really are.
Far as a decade from now, that's probably all you need given the statute of limitations.
Statute of limitations isn't a blank slate that means if you can get away with something for n years you're off scott free.
I'm not googling this type of query at work, but typically as more information about a crime becomes available to law enforcement, the statute of limitations is reset. So if you're buying something illicit and securing communications with PGP, and the SOL is 5 years, if LE doesn't get the contents of that communication for 4 years, they still have 5 years to decide what to do with it.
All SOL means is that LE can't sit on incriminating information about you indefinitely and pursue charges decades in the future for minor crimes.
Far as a decade from now, that's probably all you need given the statute of limitations.