There are a few of us on here who are fairly experienced FI's many of whom have posted on this thread.
I will guarantee you that after that many instructor changes and that short a time, you are NOT ready for the circuit yet.
One of the cardinal and very common sins commited by FI's, is to rush people into the circuit. 8 hours is simply not enough time, especially given the mucking about you've had.
You are not I'm afraid the best person to judge whether you are ready to move on or not. If you were, you wouldn't need an FI next to you!
Circuit details should not be used to polish your basic flying skills and another hour or two in the training area, will save you a lot of time (and money) in the circuit later.
This sort of treatment of students has me banging my head against the wall in frustration. It is simply not good enough.