Hi Mark I think the last comment about doing 90 days in the UK then 90 days in Spain might be a great option for you. Don’t forget that everything is still a bit up in the air following Brexit and I’m sure things may change in regards to required incomes etc. Spain might loose out considerably if they don’t adapt this. However it may be set by the European Union.
My best advice is to travel over to the Costa Calida. Rent a place for a bit. On some of the golf courses you can pick up an apartment for around €450 a month. This will give you a base to explore. There’s loads of different areas. You’ll also meet people this way too and make valuable contacts. Find a good English speaking solicitor. In terms of La Manga I find it overrated as a destination. It’s basically a long wide strip of accommodation, shops and hotels. Very popular in the summer. You can be a bit isolated depending how far down you go. My best advice again is to try different things. We owned and lived on La Torre Golf Resort. It’s about 20 minutes from the coast but has everything you need including pubs, shops etc. We know a friend who is single and moved out with his two doggies last year. He loves it and has met so many people. If you want to buy you can pick up some great properties at reduced prices. The resort is stunning visually. There’s loads similar too so you might find your ideal location. A car is a must in most places. Good look. If you want a chat further about anything please message me. Mark.