I'd like to know how a Romulan can be a Lt.Cmdr in Starfleet....
It's one of those things that just doesn't make sense a lot.
And one the age thing, you have an ensgin aged 31. Now, usually a human would enter the Acadamy at age 17/18, so would be 21/22 when they graduate. Still being an ensign at age 31 is possible, but you'd have to be a pretty bad officer to NOT recieve any promotions during 9 years. So that's something you might want to think about.