I would level that second team. Professions are always good to have (or bad to lose). More characters at 80 is good, it opens more options.

I'm in another boat : I levelled 5 shamans 'till 60 and then swapped one for a paladin. Now I would like to try 5 shamans at max level, so I planned to level another group to bring the fifth shaman from 60 to 80.

So many things to do, so little time ...