Hi Julietmurphy,
I would recommend that you look into the medical history of any dog you wish to cross breed. There can be complications later in life especially with this breed due to their hearts, knees and swelling around the spinal cord. Therefore it is optimal to be breeding two dogs in perfect condition.
For security I would have your dog assessed by the vet for a predisposition to ill health and make an informed decision moving forward!
I wish you all the best and hope you find a suitable breed!