Timbo, I know this may be new to you, but don’t think of this as your typical 91 gig which may do a little 135 flying. This is a very large 91K/135. Forget what you may know about “on call”. If you’re scheduled for a 7-day tour, expect to airline somewhere to an airplane on Day 1 and not be home until Day (night) 7. In between, you’ll fly, break, sit a little, airline to another airplane, fly some more, etc. The chance of you sitting at home on any of your duty days is practically nil.
And here, EVERYTHING is a last minute change. Even if you’re briefed for something the night before, it will all be different in the morning. If you’re not comfortable with that, this is definitely the wrong operation for you.