Opp2,
Just wanted to reinforce Jan's assurance (not that she really needs any reinforcement!) that BAHA procedures vary greatly from doctor to doctor, so that you and others who are considering getting a BAHA device won't be discouraged by Jo's doctor's requirements.
To give yet another example of different procedures, my BAHA abutment was implanted at the same time as my translab surgery -- seemed like a wonderful idea to me and I jumped at it. Many (maybe most?) other doctors don't combine the surgeries and prefer a "waiting period" of at least several months between the AN surgery and BAHA abutment surgery. There are certainly valid reasons for this wait -- many patients find that SSD isn't that big a deal and discover that they can adapt quite readily to it; others don't know for sure that they'll be SSD as a result of their AN surgery ... so the BAHA implant wouldn't have been an option at the time of AN surgery anyway.
I think the bottom line in all of this is that once you've decided on a "BAHA doctor" you've also agreed to follow their protocols and procedures.
Best wishes as you continue researching your options!
Catherine (JerseyGirl 2)