What handsome guys, I would wait on letting them out of the cage, they need to settle in and be more comfortable in their new home first. Thanks for rescuing them, how awful that the breeder has French Molt in others and wants to destroy them, here is some info on French Molt French Molt: Diagnosis, Prevention and Control
I would have these 2 seen by an avian vet before introducing them to your other birds, they may not have been kept in the best of surroundings at the breeders and who knows what they may have picked up, hopefully they are both in good health.
I would have these 2 seen by an avian vet before introducing them to your other birds, they may not have been kept in the best of surroundings at the breeders and who knows what they may have picked up, hopefully they are both in good health.