I run the Vintiques in 16x7 with no spacers. Summit specs them as having 4" backspacing.
Stock front end (ball joints, calipers, etc). No issues.
As for the Tacoma spares/take-offs - all I know is what I have read here on Mud over the years. They need spacers.
No issues with balancing. I had Big O mount + balance the tires and then I put them on and did an alignment in my driveway, and have been good since (maybe 5K miles).
I have the Vintiques in 16x7 with 255/85-16 Cooper Discoverer S/T. Love the setup. As you probably know, no spacers necessary with the Vintiques.
Driveability is great… but I came from 33x9.5x15 which always felt a little squirrely in the turns. So that experience is relative.
I am heavier...