Asked a buddy who ain't that smart on what he would do, if he could live 300 years.
He said: "I'd rob a bank, big time."
I asked why he would do that and he said that he could give the money to a trustee and sit his time and become rich afterwards.
So your story sounds legit to me. And I just asked for 300 years. Living 16.000 years like in the movie: "The man from Earth", was way out of his graspable zone. And he started arguing about god would kill you and so on...