I hear you on the impatience it's tough. I am a plan A, B, C person. I need back up to a back up to a back up!!
As for us we are with SDFC (In San Diego California) but I have back up to back up for that too!
I know that with www.ivfvacations.com (the agency that works with the Czech clinic) for some reason, when you work with them, the wait is shorter. not sure why.
What ever your path is, keep me posted and I am sending you the best of wishes!!