We've hauled all of Mark's XJ's and MJ's on it. It doesn't have trailer brakes. I would need to measure the distance between the wheel wells on the trailer. With the width of you rig Glenn, I don't think it will go between them.
I think most of these have been answered already but, yes it'll haul the weight, no I don't think yours would fit, no it doesn't have brakes, yes 3500# axles.
When I hauled my blue Jeep with 35's and beadlocks, I had an inch or so on either side to spare and that was it.