My surgery was done by Dr Ley, a colleague of, and trained by, Dr Meltzer. She was booking at about 6-12 months out as of June of last year, and Dr Meltzer had a 1 1/2-2 year wait iirc.
Three months post-op, I've had no complications or even concerns about scarring, etc. And am orgasmic! I'm going back in the next few weeks for the second surgery (labia minora, clitoral hood, better definition of general appearance).
I would think that the two-stage procedure is better, because this is a major surgery and less work is done during the first operation which enables better and faster healing, while the second operation is mostly external (less intrusive). Not arguing for or against, but just mentioning a potential advantage with the two-stage.
Also, several states in the US have laws mandating GRS coverage. WA and OR are just two that I know about.