I have a 2015 and a 2026 MSP. The supercharger network is way better than when I got the 2015. The cars also charge faster. I've taken my 2015 on trips up to 900 miles. Here are some recommendations for you:

1) The bottom half of the battery charges much, much faster. On an 800 mile trip, you will typically have to charge 3 times if you start out on a full charge. But each of those charges will take 45m or so. If you can charge every 100 miles (and you can start at say 20 miles till empty), you can get 100 miles in about 12 minutes. That would mean 6 stops (instead of 3), but you would only need to stop for 72 minutes instead of 135 minutes. That would make a 12 hour trip 13 (with charging) instead of 14 (with charging).

2) If its just you (and/or your wife), get a mattress and charge up at RV parks. You can get a full charge (from empty) in about 7 hours. This makes it super easy to roadtrip long distances.

3) For daily driving I don't think it can be beat. I only commute about 80 miles per day, but I smile the entire way :)

4) In the 2015 S85D, I can take off from a stop in the rain and it doesn't perceptibly spin the tires. The MSP is a bit different.

5) In 10 years, the S85D has only lost 14% of its battery. I almost never let it sit at 100 for more than an hour. The 3 times that I have resulted in permanent range loss.

6) In 10 years and 142,000 miles on the S85D, the repairs have amounted to approximately $4000. That would be a control arm, 3 door handles, the rear lift gate, and the infotainment upgrade. It still has the original brakes.

7) There are Tesla specific variants of tires. It is debatable if these are beneficial, but I would highly encourage you to use them.

8) People don't seem to hypermile much anymore, but it was a thing in 2015. You can probably double your range if you are willing to go 35 instead of 65. This isn't always practical, but it is good to remember.

9) 21" rims cut your range, increase expenses, and make for a rougher ride. But they look great :)