Hi, I did a similar route to this last year as part of a round Spain tour. I cycled from Roses, Catalonia down to Gibraltar and then all the way up to San Sebastian via Seville, Salamanca and just over the border in to Portugal. I avoided the Costa del Sol though by heading inland via Tabernas, then the Alpujarras and Ronda which was stunning. I agree with above comments re blog layout. Seems to be just photos and text on a small left rolling section with most of the page taken up but the map. Agree re the heat. I found it too hot for camping but cheap hotels with a/c were plentiful. Heat tolerable when you are actually cycling. One section I had to take extra water as was pretty remote!
My trip is on my blog, though you need to scroll back quite a way. I need to do some housekeeping on the blog.