I suppose it's this model:
It's quoted up to 10.5. I don't know, haven't tried it, you said you don't have experience with such big rigs. Many sailors don't like them, and with 60% mast and alu boom it's going to be even harder to handle. Maybe you should go with 9.8 if it's available, even 8.8 is a good jump from 7.0.