What a great question Arbywon.
I can tell you what I did.
We faced almost the same situation as you do. I'm retired. My wife will retire in six months. Our FFE lease was up a few weeks ago. I struggled forever on what to do. The big problem was absolutely needing a car for a six month commute for my wife.
I spent months researching what to do. Went through all kinds of scenarios. And fortunately, nobody was offering any kind of good lease at the time. I was super close to leasing a BMW i3 - the dealer just couldn't figure out how to get the numbers right.
My final position was turn the leased car in and buy a used FFE. We will just drive the new car into the ground - when the battery dies, well that's life, four or five years from now. In the meantime, I have a car I absolutely love and love to drive.
Here's what I found - Ford dealers have a good number of used FFE's. Except they price them at outrageously high numbers. In Chicago area, $12,000 wasn't uncommon for a 2012 or 2013. I found a used car dealer that does very strange cars. He had a 2013 FFE for $8,500. I bought it. Cash money, no stinking lease or loan, just bought the thing. Easiest purchase I have ever made. And because I have AAA with the RV addition - I had the car flat bed towed to my house. Made things even easier.
If you are retired, put no miles on the car, and have a long distance car - there's no need for a longer range car, or a brand new one. Just find a good solid California FFE used. There are plenty of them on the market. And only pay in the $8,000 range. And by the way - get rid of that ICE Infiniti, and go buy a Tesla. You deserve a retirement present.
You really don't care about the mileage. The only real concern is tires - you'll probably have to buy a new set. Other than that - buy the used car. I wouldn't recommend a newer FFE. You want one that has lived three years on lease. A newer car might be a lemon buy out. For that $8,000 you will get the best darn car in the world, that won't cost you a dime in maintenance (besides the tires) and it will last you at least 4 more years. $2,000 a year for a car - darn that's good.
That funky used car dealership, they had Leafs and electric Smart cars - in Chicago. Go figure.
There is almost a 100% chance that Ford won't negotiate that end lease buyout number. It isn't up to your dealership - it is up to Ford on what they do. We asked many times, there was absolutely no budging on that contract price. None. So they took a nice FFE off to auction and got 1/3 of the residual price. I'm guessing they also get a big old tax break on losing money on the deal. So that's why they don't negotiate.
2014 Platinum White FFE (Turning in mid Dec. 2016 25,000 miles)
2013 Ingot Silver FFE
2012 Titanium ICE Focus
2014 Tesla Model S 85