I would say probably the VE, too.
I may be weird, but the Camino Finisterre/Muxia always made more sense to me after the
Camino Frances than after the Camino Portugues, especially if the CP included some of the Coasta or Senda Litoral routes. Walking westward along the Frances, the Finisterre/Muxia is a natural extension of the Camino, extending it on to the ocean. On the Portugues, you are walking north, and even somewhat eastward at the end. If you've been walking the Coastal or Senda Litoral (or even the Central at Pontevedra, more or less), you've been walking along the ocean already and left it. To head back and return seems more of a shift in momentum to me.
And then there is the idea that, on the CP, this is your chance to walk the VE. You can walk the Finisterre/Muxia after any Camino.