If I were you, I would grab a command, put some hours under the belt and then go to see the world. If you have the chance try to enter the contract world as a Captain. I have some collegues that left to see the world on their early twenties as F/O and then returned for the same company still as F/O while the rest of us get upgraded. My point is: do not expect an upgrade anytime soon out there. Anyway that's your decision.
