Assuming this is advertising site only and 8-10 pages (based on 3-5 page templates) I can hammer this out for you in a few weeks.
I put 30 days because there is generally time between stages as each side reviews the content, deliverables, thinks on it and replies etc, but we can likely move quicker based on your needs and response times.
My general process is is 1-2 hours for kickoff discovery meeting(s), sometimes a quick intro, knowledge exchange then if time allows I can have a day or so to think through and issues and questions and reconvene to solidify the plan on/in another call/meeting. 2-3 days for first round wireframes for approval. 2-12 hours for wireframe revisions depending on complexity of the change requests.
Then 10-15 hours to build out the page templates. 8-10 hours to ingest content and build our pages. Submit for approval and 2-10 hours for revisions.
These steps are based on over 15 years in digital creative working on small to large sites including multi million dollars enterprise eCommerce sites.
You can seen a handful of my work and resume at:
http://JamesEinspahr.com.