DD has been saving up for her own stirrups for her share pony. She's looking at free jump or acavalo however we're struggling with whether to go for the junior options or adult. She's 11 and a size 2/3 currently she doesn't want to spend lots of money then grow out of them in a couple of years. Reviews on the freejump junior say they don't accommodate the shoe sizes they claim and that they can be snug on a size 4. Any experience on that or the acavalo sizing?