[audleman]

The scope of this project sounds huge. I can't imagine that you'd be able to do it as a sole developer in 5 weeks.

Are they handing you wireframes and design files? E.g. has somebody already done all the work of thinking through the UX, come up with all of the pages, handed you the static assets, and all you have to do is program it? Because if not, that part alone can take months.

Are you prepared to develop on multiple phone platforms? That could take 5 weeks.