Thanks for posting the link. That is an outstanding tool. I spent a while checking the trip with the EVs on my short list. Assuming a starting charge of 90% with an extra load of 180kg, there wasn't a single one that could do the trip without a charging stop, even the model that advertises a 580km range. In fact, the only model I found that didn't require a stop was a Tesla and they are definitely not on my list, not just because they are run by a nazi sympathizer but also because their nearest service centre is an hour from me.
But the one thing it showed me that I hadn't considered is that you aren't forced to fully charge on a stop, only charge enough to get you to your destination. Most of the models I checked required a charging stop of 5-10 minutes which isn't as onerous as the 40 mins I was expecting. Just enough time to get a coffee and have a pee. I just need to find a charger close to a 24hr coffee shop. I grew up without indoor plumbing so I can pee anywhere but my wife is a city girl and a little more picky about these things.
So far, the Hyundai Ioniq 5 is at the top of my list. My neighbour has one and absolutely loves it.
I use it a lot, although it has a tendency to underestimate my consumption. I probably need to re-enter some economy figures.
If you're OK about stopping for ten minutes, that massively simplifies your problem. I thought you were against stopping at all. Bear in mind that an EV charges fastest from about 10% to 50% state of charge. So if you want a short stop, you go for three things. First, you pick a car with a fast DC charging curve. Don't even
look at anything much less than 150 kw headline power rating. Second, you find a charger that is capable of delivering what your car can achieve - no matter how fast your car
can charge, you will only get about 48 kw max from a 50 kw charger. Third, you stop when your battery is quite low. 20%, even 10% if you can hold your nerve. Say you need 30% more charge to be sure of getting home in good order. You can get that in a few minutes if you're charging say 15% to 45%.
Not many people stop for 40 minutes whatever they're driving. Sure, I do, but that's because my car's top charging speed is rated at only 88 kw, and I'm lucky if it does that, also because it's a relatively small battery so I have a tendency to take it up to 90% when the charging is significantly slower. But that's just a thing my car does. Honestly, 20 minutes will get you 10-20% to 80% on many if not most long-distance touring EVs.
Another point. If you can slow charge at your cottage, you can start at 100% not 90%. Why wouldn't you? Yes, there are warnings not to
leave NMC batteries at 100%
for significant periods of time, but there is absolutely no harm at all in charging to 100% if you're going to be driving it down under 80% the next morning. Just charge to 80% in readiness, and add the last 20% the night before you're setting off on the long trip.
If your neighbour likes his car then that's a good recommendation, but take a good look at the specs because you may have slightly different requirements. Not just battery size/range, but top charging speed and the advertised 10% to 80% time on a charger that's powerful enough to let the car achieve that speed.
Teslas are marmite anyway, but the Tesla supercharger network is excellent and most of it is open to all cars. Try not to let your opinion of Elon Musk stop you from buying electricity from his company now and again.
What I would
not recommend is buying another ICE car to tide you over. It's a dying technology, and the sooner you get started on the learning curve of the new tech, the better. If you get something you can live with for a couple of years, even with a few compromises, and you've done the maths on changing again after that time, you'll find that you know so much more about what you want and how to manage your long journey that you'll be in a great position to make a perfect choice when that time comes.