Courtney Calcagnini I believe trains with McQuay stables, which is one of the top stables in Texas. Tim McQuay is into reining, and I beleive is one of the best. Colleen I don't think is quite as well known but is very very good. Courtney is a nationally known hunter rider. I'd ride with any of them any chance I could get! However, with their extensive show schedule I have a feeling it might be hard to schedule in, and I would doubt they would travel. But definitely worth calling! I'd call them first.
I don't know Jessica Pye so I can't say anything about her!
I will PM you about the others.