Hi,
I think you have had some really solid advice already from others, but would like to add one very important piece of information for you to think about. Before we moved here we put together a list of pros/cons to help with a decision.
We also asked ourselves 'what will we do when living here'? It may sound a daft question, but it isn't, because away from all the financial considerations, it's important to have a plan for the future. Spain isn't perfect (no country is), but away from the advantages of the climate, you have to think about what to do, e.g. hobbies, groups to join and life interests? We are really glad we thought about this because it made the transition into Spanish life so much easier.
Best of Luck
Malcolm