Does καλῶς mean “right” or “well”? This is one of those situations where I would think we hear things differently.
Paul has been arguing for celibacy, the gift that no high school or college student wants. His basic argument is that it is better to remain celibate so as to be able to focus on ministry, but it is only right for those with the spiritual ability to do so. (And all students sigh a sigh of relief.)