It's fun stuff....nothing like agreeing "pre" session....who is in charge. The limits are only so much as the ability to define them. Clarity, clarity, clarity! The more information given...the better the rapport. We are all fucked up and it's a delight to find someone who respects that.
I suspect you will do well, not to mention having fun whilst doing so. And, what's the point of doing well if you're not having fun doing so.
kindest,
eddie.