My advise would be to buy one property in your legal residence, so that would be the Canary Islands based on you being an EU pp holder.
Then I would simply rent the other nine months of the year wherever you want and as 'winter' is the high season in the Canaries you shouldn't have too much problem renting your own place out, in fact you could make a packet over xmas/new years.
Sounds cool, try not to take too much on-board from the resident doom-mongers of TT.

