There's a great deal of difference between a tracheal shave and a feminizing laryngoplasty.
The trache shave is pretty straight forward and can be done by a modest effort by a plastic surgeon.
The laryngoplasty is very specialized and very delicate, and most plastic surgeons will not attempt it. Realize that if there is any problem you could have your voice damaged permanently. This surgery is usually done by a specialist. It can be performed either before or after having a separate trache shave. As you may know, following the laryngoplasty there is a period of re-training the voice that must be done before you can use it effectively. It isn't just have the surgery, then poof, you speak in a higher timbre.
Much of this re-training is virtually identical the same training from a speech pathologist that you would take if you simply attempted to learn how to speak in a feminine voice without the surgery. You could save quite a bit of money just going that route first and seeing if there if you can do it without the surgery first. There is one speech pathologist that deals with trans people that I know of, there may be more. That person is Kathe Perez. Here is her website:
http://www.exceptionalvoice.com/yThe trache shave hurts a bit like a moderately severe sore throat for a couple of days afterward. And it is a little hard to swallow for a bit, but not so bad that you cant eat, though you will be on liquids for the first few days. Also because of the trauma from the surgery your voice will be lower and hoarse for about a week or so. The pain and soreness passes quickly.
I had FFS and a trache shave done at the same time and it was there was not any issue with it.
I have investigated feminizing laryngoplasty and I have abandoned the idea. I know of women who have had it and can barely speak above a whisper. It is very, very tricky. Not many women have elected for it, though there are some here who have.
-Sandy