I found a good set of tracks for the Geira on wikiloc. 9 days with these stages. The author is Isa Isi. Looks like a good starting point.
Braga
Terras de Bouro
Portela do Homem
Ameijoeira
Cortegada
Berán
Beáriz
A Portela
Pontevea
Santiago
I was a bit disappointed that the trail doesn’t actually go through the town of Geres. It’s an old spa town, kind of a hub. So maybe, @Isca, you might want to consider a detour there. I remember walking in the eastern part of the park to a very beautifuld monastery in ruins, called Pitoes das Júnias, but that is probably too far from Geres to be an add-on.
Are these stages similar to the ones others have seen, planned, or walked? I haven’t even started to look at lodging options, which might require some reconfiguring of course.
I would say at least two of those stops do not have accommodation options, Portela do Homem
Ameijoeira
There is a stop I am not familiar or heard of yet on the Galician side
A Portela.
The Wikiloc poster may have had connections to these areas so was able to stay at those places or used some creative taxi drop offs and pick ups.
Most people who walk seem to do it in 9 days some in 8 or one person in 7, I'm going to go for 10 or more, I have waited so long for this it would seem a shame to rush it. My provisional stops are:-
Braga(H)
Caldelas(Alb)
Campos de Gere's(Alb)
O Banos- Entrimo( H's or Aptmts)
Castro Laboreiro( H's or B&B's)
Cortegada (CR or Pen)
Ribadavia( H) - There is some luxury accommodation here but I will go for the humble Hotel Caracas, don't know why, sometimes I get a fixation on staying at a place on Camino this is one of them.
Feas(CR)...
.'Feás (km 83)
Hospedaje: Casa Rural O Forno do Curro +34 609 855 238
Comidas por encargo: Bar Nictron +34 988 28 51 78 (muito recomendável)'
This is copied and pasted from the website for this route, the Casa Rural has a room set aside for pilgrims it only has two single beds.
Forcarei.. this place is 1.6km off route but has a couple of hotels, you would take the detour at about the 54-53 km mark.
Pontevea - There is a hotel spa just out of town but for a little while the town advertised an Albergue de Peregrinos before the virus hit, it listing was taken down soon after, hopefully it is offered again next year.
Santiago
I still have to add in detours and one two night stop( Ribadavia)
The Beran stop would mean that you would probably be doing a flying visit to Ribadavia before walking on the additional 4-5 km in the afternoon, or getting a taxi back in and out to visit the many rich historical and cultural sights of Ribadavia.
June can't come quick enough for me.