The 212 vox cab has 30Watt warfdale speakers. They will NOT hold up to the 100Watt AC100CPH. You would either need to replace the speakers or get the 412 cab.
Actually I don't really think the warfdales are the best speaker for the AC50CP/AC100CP. I am going to put Celestion G12H30's in my cab.
I might be selling my AC50CPH soon, I am strapped for cash right now with a new addition to the family on the way.