It's going to vary depending on how difficult all of this ends up being. I would suggest calling a few technicians and contractors to come and give you quotes. You should be able to get a good idea of the price range to expect once you get those quotes. Hopefully you'll be able to find some people to help you get this project done the way it should be without too much trouble.
Currently we do not offer ActiveH as a status. We have about six different contigencies for after an offer has been accepted but it is not ready to close. The most common one is ActiveB. The seller has an offer but will take backup offers up to closing. I hope this helps!... more