Great shots Si, Was thinking of taking a trip there with Spalding next year, is it worth it? From your shots it looks a great place for spotting.
The North airport is probably the best for photgraphy with a pretty good vantage point along the runway and it is used by quite a varied amount of traffic. I think the high point is the Iberia A340 which comes in from Madrid in the morning and the Cygnus DC8/757 which operates a cargo service to the island. The south is mainly holiday traffic with the usual TOM FCA MYT TCX AEU etc etc aircraft interspaced with some private jets. One thing that is essential for your visit is a rental car!
All the best
Si