That’s a lot of info to ask for, but here goes, first read Maggie’s blog of our trip in ‘15,
Note where we stayed, where it was a hotel, or hostel, check on booking dot com to see if they are open in winter. For Albergues, maybe Mundicamino has opening/closing dates.
Google historical weather for Malaga, and surrounding areas.Depending on your proposed route look at the resources section, not to mention the relevant sections of this forum.
PM Maggie for any extra info she may have, she is a lovely person and I’m sure she will help if she can.
Regards
George