Since I started this thread, and it has picked back up recently, I guess I should post what set-up I ended up using for the sake of posterity. I've been using the same set-up for about a year now and I'm extremely happy with it.
The XL+ itself is housed in a 6U SKB rack with a Furman power conditioner and a 3U drawer. It's a touch heavier than I wanted originally due to the drawer, but it saves me some hassle of carrying an extra case or two full of cables and other assorted BS so I'm ok with that.
The MFC-101 is on a board I built myself, with two Boss expression pedals (one FV500L and one EV30). I use a Mono PB2 Tour for transportation of the pedal board.
I run the XL+ direct to FoH with a XiTone 1x12 powered wedge (last years version, with the Matrix power amp) for personal monitoring. Sound is great for my band and me. I haven't weighed it, but it honestly feels lighter than the listed weight of ~36 lbs (though maybe that's because it's so much lighter than the PortCity cab I was using before this). Mick from XiTone is great to work with by the way, I definitely recommend getting in touch with him if you need an excellent quality FRFR cab, especially if weight is an issue.