I think it's about 17 pounds which you get back after having 5 bouts because by then the ABA will have profited from what ever revenue the shows you fight on bring in.

What type of shape are you in, 5 foot 7 is short for a 210 fighter.... very short.

What is your coach putting you in at? you wanna get your self in fighting shape first, 75kg would be a good weight for you to aim for.

Depends what you feel good at.