hold ups happen all the time thats for sure, i was to play an undercover cop in my buddys music video and after three days of screw ups (spread over a cpl weeks) we finally got it together, with all the shooting involved for a three minut video i could only imagine the work involved in something like what you are doing.
looks like things are comming along tho, cant wait to see it when its all finnished. keep up the hard work and im sure itll pay off