Just as an update, they have decided to do radiation on the Axilla. If I'm understanding right it's "only"(?) in two nodes there.
For some reason,I still don't grasp the node thing the way I should. I do know there was no sign of it in the nodes they were previously concerned about it.

The team will meet and decide if any chemo is necessary but right now they are not leaning towards it.

We meet with the MD on Thurs so we'll get more details but I think this is based on the fact that the rest of his PET is so good(I feel like we were so close).

It's scary and frustrating but it does feel good to have a plan. And his treatment team is so caring and on top of this.

It also helps that every day he continues to look and feel better. It makes it hard to wrap my mind around.
Apparently, after the H and N radiation, this is "radiation light..."That's also a relief. They expect minimal side effects.