I was kicking around picking up a few bell escutcheon so there would be room for a 1/2 coupling they stick out off the wall a bit more but never seen or used them other than ran across on some real old work, if there is a hold right or hyco coupling your kinda screwed inside a cabinet and sudenly the idea of a high box or a bell starts sounding a lot better than nothing.
you could put a fip on with nipple along with a deep flange
From what I can tell, I won't be able to find a bell escutcheon locally to cover everything up, even still I have those questions on soldering.