I went from a 3x locked 80 (3" lift on 35's) to a 2010 LX, which quickly got 35's also.
Initially, I feel like it gave up a lot in offroad prowess.
1) ground clearance is greatly reduced, especially around the rockers. Older trucks are just built with higher bodywork. I have slee sliders and they've been used to the point they're bent into the rocker plastic on the driver side. I would consider sliders a requirement if you want to do some harder trails.
2) I find the electronic traction aids odd and not very helpful. ATRAC firing off while you're climbing an obstacle might help get you over the top, but just feels weird. I don't use crawl control at all as it just feels like a gimmick for Colorado wheeling (might be more useful on different types of trails) and it frankly makes the truck sound like it's broken

I prefer to lock the center diff, turn off everything that I can, and just use both pedals to their fullest.
3) Size is an issue in some instances, but even being the giant whale this thing is, it is pretty nimble for it's size and it hasn't been too much of a problem. If you wheel it hard, you will gouge up the bumper plastics, and depending on your area, pinstripes are gonna happen. Par for the course, the 80 was the same, the LX is just a little worse.
I ran a couple pretty tough trails in the LX this summer and it didn't make it, so I doubled down and got F/R lockers. Now it's a beast and will do 90%+ of what the 80 could do (the remaining 10% being pure "hung up" or "it's just not going to fit there.") The 80 was just unstoppable off road and 90%+ of what my 80 could do is a pretty darn good wheeler in my book. With the added benefit of massive power, easy handling, quiet/comfortable cruising, I'm now very satisfied with it overall, even as a semi-hardcore wheeler. Without the lockers, I'd say it's more like 75%-80% of what a 3x locked 80 could do. Just this guy's opinion
Given your use case, I think you'll like the LX570. If you find you're running into situations where the off-road prowess isn't up to your needs, get a rear locker.