Worst case situation - if I end up playing small arenas, I might get a second one and power a second cabinet with it - both LMIIs might still be less expensive and lighter than your CA9 alone!
Good point, Will! Maybe I'll sell the Crest/Alembic and GK Head I have and get a F1 or SD800.
My whole world was about to get turned upside down if it had turned out that I couldn't run an 8ohm cab with a 4ohm head.