A BFA is enough. It's really about the strength of your portfolio. An MFA isn't necessary to get your first jobs.
However, if you want to be an art professor, you need an MFA. And some management jobs want an MFA or masters in art - but for those jobs, you must *first* have the work experience; so don't rush right into an MFA.
Get your BFA. Work. Then go back for your MFA if you see that it will benefit you.