Coincidence, I'm downsizing in the same way with an Axe FX II XL+ rig. But... I'm also keeping my MP-1 in a separate rig. I can't see myself selling it!
Originally I put the MP-1 in the FX loop of the Axe Fx, so I could call up the MP-1 like an amp block in the signal chain. But eventually I got to the point where I was creating presets that didn't even use the MP-1. Thus it no longer made sense to me to keep the MP-1 in that rig, so I returned the MP-1 to its own rig, and built a separate rig around the Axe Fx.
The Axe Fx rig was to be my live rig (FRFR) because it's lighter, and broken down into smaller units. MUCH easier to transport, and I'm not getting younger. Unfortunately, the band has entered a state of indefinite hiatus, so no gigging for the foreseeable future, the irony! Hah!
But I'm still keeping my MP-1 rig. The rack weighs as much as a car, the cab is bulky, the pedalboard is heavy. But I still like it!! It even has new tubes.
BTW another coincidence, I'm also going to Japan! Err, not a move though, just vacation.