I might not be the best resource since i don't currently have a 4runner, but plan to get one in the next year or two... but i still wanted to try and be friendly help a little :/
I don't think it's generally recommended, and can be detrimental to the 4wd system when used on pavement regularly...
this post also has the owners manual with information about drive modes and how to switch in/out of 4wd modes starting on page 412.
https://www.4runner6g.com/forum/threads/owners-manual-warranty-maintenance-guide-2025-4runner-6th-gen-%F0%9F%93%95.2054/
4HI typically depends on the condition, and not something used as an AWD feature. It's also noted that you shouldn't exceed 50-55mph when in 4HI. 4LO is used for heavy terrain, thick snow/mud.
A couple of thing that make me feel like the TRD Pro might be factory height...
The trailhunter looks to be sitting on a slope making it slightly lower.
The front bumper heights are different obviously, but the frame underneath, mirror height, and rooflines all look pretty similar in height.
Anyone happen to know if the OR/ORP, when equipped with the non-hybrid, would have an option for 3rd row seating? Or, is the 3rd row going to be pretty exclusive to the limited?
I did a quick side by side comparison of a 2024 land cruiser and 2024 4rnr, it looks like you would save about $500/yr in gas if you go with a hybrid model. Which i would think would be fairly comparable to what we'll see in the 2025 4rnr...