Biewer/Havanese Stud

We are looking for a small dog to mate with my Biewer/Havanese mix. We just received the results from Embark and discussed the health results with our vet. We are looking to breed with a similar dog but open to other small breeds. We are flexible with the stud fee as this is the first time he's being bred. His name is Prince Rupert. He's going to be three years old next month. He weighs 15 pounds. He doesn't have any serious health conditions that we are aware of and he recently just got a blood test done in October 2023.