One other point if you plan to tow a trailer: regardless of weight limits, the Model Y receiver is apparently quite low to the ground, which has been a bit of a concern for some folks on the forum. I haven't gotten to the point of towing anything, so I can't personally say how much of a problem it is. I see lots of posts from people towing a T@B or Alto trailer, which is pushing the official weight limit, so apparently it's not a major issue. But I suspect it'll be easier setting up towing with the Rivian.
Also, everyone says the MY setup is very cramped, making it annoyingly difficult to attach the safety chain.
For me, the Supercharger network still wins over all other concerns. Doesn't matter how good the vehicle is if the charging situation isn't reliable. If/when the SC network opens up to everyone, wellll, that'll be an interesting day, as Jayne Cobb once said. Fortunately my big-time travel days are a couple years in the future, so the Buzz might be in the mix too by then.