We got Rhys cropped last Tuesday at the age of 14 weeks and 3 days. The vet came highly recommended and prefers to wait until 14 weeks to crop APBT/Amstaffs. I think it worked out great because a) we got more time with the floppy ears! and b) Rhys's ears changed a ton and were starting to come up right before his surgery. I have a feeling he would have had bat or at least half prick ears if we hadn't cropped.
He is healing great, on pain meds and antibiotics, and has to wear an inflatable collar because he has NO regard for his healing ears. Silly bulldog puppy.