This seems like a horrible idea to me. Seems like the last thing you want to do is shutdown and have your customer base go somewhere else. They might just find they like it.
Plus these things have a way of always being much longer than originally planned. This 4 months has already turned into 8-11 months and will probably end up being a couple years or longer. What if the economy tanks and work stops and it sits there for years, Like the big blue monster?
Just seems like a bad idea, but what do I know?