A lot naff!!!
Try some other places!!!
Walk in and say I am looking to do 15 hours per month hour building or what ever, I will pay up front for this. You will get a better deal almost anywhere.
However sounds like a good deal for them.
From what you said I would be surprised if you could do 16 hours a month off peak by look of your location, you would have to be lucky.
JL.......