I had this thing aligned, and got the bad news that my caster measurements didn't match side-to-side.
Apparently I missed matching them up when I assembled the axle, by 0.4 degrees. That would have been great if my passenger side were the one with more caster...but naturally it was the driver's side. So, I now have a caster-correcting bushing in the upper ball joint on that side. No big deal, but a little disappointing.
I bought a pair of used 35x12.50-18 BFG AT KO2's, so that made my decision easy for what tire I want to run.
I bought two matching new ones and had them all mounted on the 18x9 +25 MB Wheels I purchased a couple months ago. Here's what it looks like with them on it:
There is some tire rubbing at times that I'll need to address. I suspect it's hitting the bottom corner of the front bumper, so that will be easy to trim. They also rub the plastic inner fender where it goes over the pinch seam--but there seems to be a lot of room behind the plastic, so I might try to heat/shape the plastic for more clearance. Failing that, it will also be an easy spot to trim.
Turning, at full lock the tire blocks just touch the radius arm. Not very hard, they aren't crammed into it or anything--so I'll leave that one alone for now, rather than limit the steering. It does make me glad I inboarded the radius arm mount though.