Hi Wendy
Have you definitely ruled out other options?
How many 'spare' days do you anticipate having?
Both options you mention (if you have only say 4 days) would mean joining back up with the
Camino Frances again for a few days.
Unless it is not your intention to walk into SDC at the end. You could walk the Primitivo from Oviedo to Lugo (depending on days you have) .
You could get transport to Leon and then walk Camino Del Salvador to Oviedo in 5 days. A glorious Camino but a quiet one. You'd have to get yourself out of Oviedo after that
Norte /you could walk any section and love it but getting there could take time.
Have you thought about spending time in SDC ? Plenty to see
Or doing part of Portuguese (from Porto) to SDC. Porto is easy by bus from SDC
Or from Tui on the border, to SDC which is much less time but (I think) gives entitlement to a Compostela for the Portuguese route.
Or have you yet walked fromSdc out to Finisterra? You could even bus it out and relax around the coast there and also on to muxia .
Have fun regardless
Buen Camino
Annie