Go straight to C+E if you’re serious about containers. Living by the coast and working containers seems like a good idea to me. Make sure there’s a port nearby! Container work is not hard to get into. I wouldn’t bother spending any more money trying to impress potential employers, they should be trying to impress you. Expect to be told you need two years experience by the vast majority of companies but not all. You will find a job if you work at it.