I also recommend trying Sam. My Michael Koop and PEOY are from him. He has quite a few sandi hybrids. His 10% off and up sale is still on, but ends soon.
Austin Creek has a decent selection of Multis. I am not sure about the crosses you are after but it might be worth reaching out. Also Windy Hill may have some leads. Marilyn's division list should be coming out soon. Or you can reach out and see if she has what you are looking for. I know she uses PEOY and Angel Hair in her breeding.
Thank you. I will try all!
I have had “The Orchid Fever”for many years.......it only responds when a new multifloral sanderanium cross orchid arrives......will not go away until I obtains sanderanium and it blooms.