I normally lurk here since I drive a FJC but my wife drives a 4Runner and you can do 1-2 easialy with a stock 4Runner.
Here is my wife's '16 on a trail only thing we had on it at the time was rock rails. Stock skids, no lift and street tires.
We were the winch point not the winched.
Hers...
I would wait until you load the 4Runner with your winch and RTT before paying money to get the vehicle level. On our 4Runner and FJC we installed a OME heavy spring suspension because we knew we would be loading them down with skids and front/rear bumpers and towing.
It takes a bit of work and...
We installed the Medium Coils for the front and the Heavy for the rears on my wife's 4Runner. I don't remember the coil numbers. They have been on now for about a half of a year I didn't take measurements of the lift but it hasn't settled much. She has full budbuilt skids and a fridge/slide out...
I was in the same shape as you for the corner of the bumper, I don't know how flush you want to go but I used square tube and made 2 wings for it. I still had the stock plastic so I left it in but you could plate it and I think it would look fine.
The triangulation really helps with the...