Lawrence,

Sorry to be negative but I think you should pass up this job. You don't
know how to cut the holes in the wall. You don't know what the requirements
for the hood are. You don't know what permits will be needed. Your belief
that the health dept (and the building inspector, and the building's owner)
will accept anything, no matter how bad does not seem likely. You do not
seem prepared to do it right so you should not do it. Since the co op has a
limited amount of time to do this they should hire experienced labor.

Dave M.