@OP: In my experience, the best coaches (not just in a poker context) will teach you how you want/need to be taught. My best advice is to contact a few and get a feel for what you want out of it and what they each offer.
Coaching is a lot harder than teaching for the majority of people; it is a different skillset entirely. Choose wisely.
In the days I used to be good at hu sngs someone offered me $500 per hour to coach them.
I could hardly turn that down, but after 3 or 4 sessions it just became patently obvious I am a terrible teacher.
I just couldn't put into words concepts that seemed obvious to me.
Coaching is v v tough.I don't believe, not for a second, that being a good player necessarily makes someone a good coach.
I do believe that many players of lesser ability can in fact make excellent coaches.
A look at Managers & ex-Managers in the Premier League (football) is adequate proof of this, I'd suggest.
The chaps mentioned in this thread as being really good players might make well be good coaches, I have no idea, but it does not automatically follow.