Trader, Officer, BH, Mando, and Jedi. Probably in that order, might switch Mando and Jedi around.
I mained a BH on Live and loved every second of it. Wasn't ever very good at it in particular, but I still enjoyed it very much. Officer was my next mained class, but I enjoyed it very much. As for Trader, I want to be able to get a shop up and running before much else happens. Good, steady credit income and it also serves as a great way to make new connections.