As others have already pointed out but I must ask if you plan to keep a "bolt-hole" back in the UK, even if you rent it out via a commercial landlord, life can get difficult in Spain for ex-pats especially if there isn't immediate family support, for example whilst the Spanish health system is good the (after-)care system is quite different and could leave an elderly couple or worse a widow(er) in dire-straights - AIUI in some areas there has been some quite active ex-pat support groups formed to support such people, others have literally had to just lock their front doors behind them, buy a one-way air ticket back to the UK, sometimes without much more than what they could fit in the suitcase...
Must say though, the area you seem set on would not be my first, second or third choice, each to their own though, at least there shouldn't be a lack of fellow ex-pats in the area! :~)