I think you’ll probably be ok. When ordered, I think the “expected delivery” date from FedEx was a few days earlier than shipper estimate, but resynced when they actually had the product in hand and was more or less shipper estimate.
You could measure your head to see what the circumference is. I fit fine in my SC bucket because I have a tiny head (my riding helmet for horseback riding is a XS/S and any smaller it’s a kids size from there)
I have read about past issues with that vendor but my Etsy purchase went rather well. It was just about 5 weeks from order to delivery, so I might have been a lucky one. I did order with FedEx delivery
The material is good quality.
Is there a particular brand of Kingshow boot that’s better than others for cutting into the sole? I got the 1366 style because it was the only one I could find in my size (having to convert women’s sizes to men’s sizes, alas!) and tried to do the cuts on one sole with an exacto knife and the sole is very messy at cutting and I can’t make a clean cut.