agreed. Although I think the trails you've been wheeling lately don't really warrant the need for a full rollcage, I have to consider your track record. You might need the cage.
Seriously, leave the stock cage for now.
You've got no reason to do a apring over and shackle reversal. Your OME stuff is fine, especially for where you're wheeling. I wheeled mine on OME's and 35's for a long time and on much harder trails than you're seeing.
The Toybox is cool but.......
I say 4.88's and lockers. You're on the road enough that the gears will make a big difference on the road for you, and obviously will help on the trail. Likewise since you're on the road so much, the ARB's are a good choice so you can turn 'em off.
Wheel it like that for a while. It'll get you lots of places. No need for the toybox just yet, let alone a bumper and winch. Remember that Ryan took his stock drivetrain FJ40 with 33's, no winch, no bumper, with f/r lockers through Upper Helldorado. You'll be able to do plenty in your truck with what it's got, but a little help with gearing and the lockers should last you for a long time, especially on the trails you run.