NEO: Sounds like the hardest part of your pending Camino has already begun. You might consider planning in 2 or 3 stages so you do not over-stress your new ankle too much. You will know when it's ready, as going 250k is not the same as 800k.
A Taxi is about 1e per km. Bus much cheaper if the timing works. Go to ROME2RIO.com and just plug in each day's journey and you can find this. Enjoy! ps: yes, luggage transfers do this, but no guarantee. You can ask mgr. at your lodging to call?