Hi Roger and Cheryl
I, like you am from the Isle of Sheppey, we bought an apartment in Sabinillas, which lies halfway between marbella and Gibraltar. There are are alot of venues between malaga and Gib. There are many Ex pat communities up and down this part of the coast. I am a Semi pro Musician, although I dont live there 24/7, I still do the occasional gig when Im out there. Nice part of the world too.
I also have a friend in Fuengirola that has a local radio station, it maybe worth you talking to him. PM me if you're interested. Incidently he and his wife originally came from Sittingbourne. (Small world innit)
Whatever you do I would suggest renting( There are alot of cheap rentals about) , as it gives you the advantage of moving around
Hope it all works out for you