Had the same dilemma as u last time during CBT.... but coz during that time the EXP is so much higher than what it is today, u unlock ships pretty fast and i manage to unlock all line (CV,BB,CL,and DD). If ur playstyle like me (support type) i suggest u continue down the CL/CA line.

but be warned...St louis and Phoenix CL is CRAP.....so be prepared to loose some hair..but once u reach omaha should be ok dy.