Day 1: Ourense - Cea 22 km Ourense sits in a volcanic crater so it is bit of an uphill slog leaving town
http://caminodesantiago.consumer.es/etapa-de-ourense-a-cea The Eroski pages are in Spanish but the elevation maps are great and it tends to be the most up to date information.
Day 2: Cea - Oseira Monastery - Castro-Dozon 23 km The Monastery is worth a visit and there are a couple of good bars there to stop at for lunch. Castro-Dozon has a municipal albergue which does have some single rooms if you realise. Otherwise it is a large (for the VDLP
) bunkroom. Open showers there, large kitchen but there are a couple of bars and a little supermarket on the way there.
Day 3: Castro-Dozon to a number of choices. We went all the way to Silleda. Friends stopped at A Laxe. There are other options inbetween.
Day 4: Wherever you stopped to Ponte Ulla. Ponte Ulla sits at the bottom of a river valley. There is a very steep hill on the way down so take walking poles. We stayed at the bar immediately on your right crossing the bridge. The room are simple, clean and reasonably priced. The food there is excellent. We arrived in time for a leisurely lunch and there were fireworks and music in July for Mary Magdalene. Good little supermarket there to stock up on supplies.
Day 5: Ponte Ulla to Santiago. 16 km. When you are staying in a valley there is a hill going down and a hill going up. Going up is always easier first thing when you are fresh rather than last thing. So while the albergue at Outeiro was an option, you probably won't feel like that climb in the afternoon. Especially if you have to top up supplies at Ponte Ulla.
Baggage transfer options:
http://www.elcaminoconcorreos.com/index_en.php
http://www.mochilatrans.com/
Enjoy your trip!