Lille vs Perpignan & Healthcare

I'm planning on retiring and becoming an expat next year. I'm currently living in California and am a US/Canadian/British citizen but currently holding only a US passport. I can speak French but not at a high level. My biggest concern would be with medical French.

These are my goals for retirement:

1. Minimize taxes (have chosen France for this reason due to the tax treaty with USA & I have visited France many times)
2. Good quality / good access healthcare ( will combine CSM/PUMA France national system will private insurance)
3. Not live in large city, smaller cities or towns are fine.
4. Have two homes, one in a "colder" area and one in a "warmer" area but both in Europe. (primary home in France, secondary/vacation home in Spain)
5. Proximity/access to see family (mostly in the London, UK area)

The two options I was considering:

1. Primary base around Lille, France in the north. Easy access to UK right on the Eurostar line. In this scenario I would buy private health insurance in the UK and use it as a backup to the PUMA . Buy 2nd property or rent in Malaga area in Spain during the winters.
2. Primary base somewhere around Perpignan in the south. In the this scenario I would buy private health insurance in Spain.

In both scenarios, the cost of private health insurance would be about the same.

Scenario 1 is closer to family and has all english speaking doctors. Scenario 2 is closer to winter home but further from family. Is private health insurance better in UK vs Spain ?

Budget considerations: Planning on budgeting $6000 / month for retirement.

Based on my criteria, which option do you think would work better, i can provide more details if needed.

Thanks!