Too bad about the single point of failure belt!
Any chance you can bypass the compressor and use a shorter belt? Even if you have to pull off the pulley on the compressor. It could postpone the agony.
I had a similar instance on a Volvo many years ago. The compressor seized on route on an Interstate. The belt started smoking! I forget what else was driven by the belt, but it wasn't critical. I just cut off the belt and proceeded. As I recall, the A/C was under warranty.