I don't recommend dealing with this client. He's sloppy. Not punctual. Not interested in finishing the project or resolving current issues that require the client's involvement. What was needed was a hand-coded php (or framework based) site with a host of solutions going beyond trivial CRUD boundaries. I proposed an implementation in Python / Django. I completed the project from the spec by ~90%. The client doesn't answer in email, blacklisted me on the site. I can show the results (after the client's edits) online, and provide the spec to assess the work done.
Overall opinion: A dishonest client. Obviously won't pay.