I honestly had no idea that you were being so accurate with the weights as I'm so used to writers using random numbers as measurements. (Personal favourite was a woman being given an 46a cup bra and being described as thin)

For 2 sure, dancers are good if they win because they let the girls have those different body types plus they can have a wider spread of ages. (Gymnasts are pretty much used up by 24) I was thinking youngest 10 oldest 28 with a 40 year old teacher

For 3 sure, to be honest with the girls I suggested I kinda got focused on girls in school uniforms and forgot the uniqueness that clothing can bring