I don't know anything about the issues with having both surgeries, except that there are two different types of final surgery depending on the current size.
I would think that you could raise the question of how small doc could go without raising any eyebrows. Seems to me to be a normal question and I'm sure they'll ask you what size you're planning on. I would just ask them at that time what your options are. I think that would tell you a good bit about their feelings on it.
Perhaps someone on the FTM board might have more info or have done this before; have you tried them? I'm not sending you away, just trying to help. Come back here and let us know if you find out anything and definately let me know how the appt. goes.