Hi Stacey
Congrats on committing to your Camino, I was in exactly your position last August/September. as already mentioned, the small church in Boente is worth dropping into, it's beside the route so no detour. In Melide, the church about 200 yards from the municipal albergue is also worth visiting, 2 very lovely side altars and very ornate decoration.
If you want a quieter, more contemplative camino then consider staying just out of 'Brierleys' stage suggestions, day 1 rather than go all the way to Portomarin, stop in Vilache ( Casa Banderas ) 19.9 kms rather than 22.4 kms, this means you'll do the steep road descent into Portomarin on fresh legs on your 2nd morning rather than on tiring legs at end of 1st day, you'll be away from the comparative hustle and bustle of P/Marin at night. Day 2: rather than go all the way to Palais de Rei, maybe consider Casa A Calzado in Portos and then you'd have the option after you unpack of the 4.6 km round trip excursion to see Vilar de Donas.
Best wishes for a great camino
Seamus