My gym has a different required hairstyle each season. My first year competing it was a side part with two french braids into a ponytail. Last year it was a poof with two french braids on the sides into a ponytail with curls and this year it is one braid into a bun
I have the exact same routine except I do the old level 5 dismount (tap swing 1/2 pirouette) and I always get a 10.0 start value as long as my cast is at horizontal!