Here are a few red flags that caught my eye:
--Breeding several (3) different breeds of dogs...and cats
--"Only people who want to show will grow the coat..."
Because the grooming is too time consuming?
--Generally, Yorkies get along and roughhouse w/ children!?
There's alot of info (parents? health guarantee?) that is missing from the site that you would need to know as well.
Looking at the Pedigree...looks like their dog Noah has came from some of the same lines/dog as one of Sugar's Mom's (Dee) dogs. Maybe you could contact her to get some more info on that line in particular....