Sound like you are ready and make sure you don't turn into a mouse. Make sure you don't show that he is getting to you. you can fall to pieces when you get home.

Also make it obvious you are taking notes and don't let him intimidate you re the notes. Try and get as much in writing and if he wants to change your conditions make sure you get it in writing. a paper trail will be worth it if you have to take it further. Also if need be get people to write you references re the work you have done for them. It will make him look bad if he says your work is not up to scratch when you have glowing reports form customers.