Well I am back and had a lovely time. The weather was simply stunning around 25-28 in the day even high up, and at night never below about 15. On two mornings when camping I had a second layer on for about 15 mins when I got up. I did not use 70% of the clothes I took, and I took very few.
www,crazyguyonabike.com/malagatofaro for the full monty - hills all very do-able in Spain. I used the granny ring at the front a couple of times for a few hundred metres, but in Portugal I took a really tough route with climbs of 15-19% and found one afternoon very tough indeed.
All in all, fab and glad I went at such short notice!