I have a Ford Focus electric, but I did test drive the Leaf and am very familiar with it. I think the advice I would give is to test drive one over a weekend or at least test drive it around town for a few hours.
A few things I learned that mostly apply to your situation:
EPA range is 76 miles - I never get this unless it's ideal conditions in summer. In winter, with winter tires, defogger on, heat on 70F, at highway speeds (~70mph), I sometimes get 45 miles range. There's a saying 'don't cross a river that's on average 4 feet tall'. I'm in Portland, so not even very harsh winters. In summer, in ideal situations, I get ~80-90 miles.
Everyone online (and I mean everyone) said they got better than that. I don't know if everyone posting online was a hypermiler or if I just got a lemon. I have exceeded the mpg estimate of every gas car I've ever owned, so I dunno.
Battery degradation is very real, but it depends on how the battery is used. I've lost ~20% of my battery capacity over the last 3 years because I routinely return home with ~20-30% charge. This is really hard on the battery. Coming home once with 30% charge remaining is equivalent to coming home 10 times with 60% charge remaining. That depth of discharge just kills batteries far more than raw miles would suggest. My 8 year 100,000 mile warranty will cover it eventually, but still. At least Nissan will tell you a battery pack replacement will cost $5500, Ford won't even release how much a battery costs or how far the battery capacity must decline before battery replacement. For this reason alone, I would suggest you do not ever buy a Ford EV.
Relying on quick chargers can be very problematic. If there's only one charger between you and your destination, what if it's out of service as they frequently are? Some charger locations/companies are worse than others. Check out Plugshare for reviews on any chargers you will be depending on. I've been in places where I was counting on a charger to be there, and then was really panicked when it was out of service (which you can't look up ahead of time). Once, it had a broken handle and it was the only one, another time there was a problem with the charger accepting payment/starting charge - both on well reviewed chargers. I now don't take trips in my electric car that require a charger and save it for commuting only.
I don't want to discourage you, but when I bought the car, I planned to only use it as a city runabout and commuter car (I have a perfect 40 mile round trip commute for this car). For anything greater than 50 miles, I use my gas car. I got a great deal on it new, and calculated that between gas savings and maintenance/time savings, the car would pay for itself after 100,000 miles (even if I junked it with $0 value). Since the warranty was for 100,000 miles, I figured it was a mathematical certainty I would come out ahead.
Hope this helps, just wanted to share things that nobody shared with me before I bought my car, despite my extensive research prior to buying.