Just trying to rip off the band-aid so I can make interim decisions.
I hope your username implies you have a maligator. I'm a huge fan of Belgians!
Hah, good way to get it done for sure.
Mal is my nickname actually but gotta love to malamutes. If we end up living in Sweden, which we may, im getting 2 of those or a couple bernies.
I have a lot to share about your questions and have written about my journey with that stuff at length.
You can read through that but i can save you a couple hours.
Tires:
Get some C loads, 33-34" and never ever look back ever. I think 33.5" is the actual in real life limit. Tire specs will generally run higher than reality.
Wheels:
Depending on tires chosen, forget about oem unless you dont mind spacers. I personally dont see the point AT ALL. Those are fighting words here so ima stop there.
Alpha equipment, Method, ICON are solid choices in aftermarket and relatively affordable. Stick to something 30lbs or BELOW and you shouldn't feel the weight tax.
If you want to spend money Evo Corse wheels are nice too. I dont see the explicit need though unless you wanted the absolute best quality. And in that case its probably still OEM.
Tire Pressure:
Ignore everything on mud, get your final build weighed, consider the dynamic load of cargo and meet the minimum PSI for your load range and that weight. Go up as you please for better MPGs and when your handling starts developing a mind of its own or your teeth rattle out your mouth back it down some.
Wheel Size:
2016+ LX needs 18s at least in my opinion. It don't look right otherwise. 18s, 19s and 20s really suit the modern aesthetic better.
Wheel Offset:
+35 - +45 depending on final tire size, neither will rub and will clear fenders flexed. That is the sweet spot i dont care what anyone says.
I wouldn't even care if Mr. Toyoda HIMSELF told me otherwise. He'd be wrong.
As far as your other mods i dont know whats best. I personally was going to do an air comp but then realized i wanted a Harrop E locker instead. I am toying with inverter ideas for the trunk and would rather carry a portable pump and more batteries than an air pump and tank on board with hoses to deal with.
Let me know if you have any questions about my s***. Good job on thinking about the long term build instead of one item at a time. Everything impacts everything else.