Welcome!
I would enjoy the plants outside in a pot for a few more weeks & then bring them in!
Zone 6...I was in SW Ohio, that was a 6a/b, I'd've never thought of keeping Bananas outside. Just me though!
There is so much great information(and preat people too!) here on the Org, I've been here 2 1/2 monthes & I'm STILL reading!!
Hope you find the answers you need & hope to see you posting again soon!
Maybe some pictures of your new Bananas?
~Cheryl