Would you do spacers? I really don't want to. but reading the links you sent seems like people have good luck with bora ones. something small like .75 ?In regards to the alignment, some folks prefer more caster. If you are happy with the way it drives that’s all that matters since you are in the “green”. When I was stock my numbers were in the mid 2 degrees And it drove fine. No complaints. After I Added a lift, bigger tires and also UCAs my caster is over 3 degrees and it drives better then stock which I attest to the UCAs providing the additional caster. Steering feels tighter/solid with the higher caster numbers.
The Maxx seem like one of the best compromises instead of a true Mud terrain. How is the road noise with them vs the K02s which I think you had previously?