This should be a simple project for a designer with search engine optimization skills.
1. Project is to copy site architecture of www.businesstown.com. Copy linking structure (anchor text of links on pages and headline text of pages they link to).
2. Having developed the site architecture, design PHP templates for new site using Joomla CMS (I'll give you sketch of home page) based on the same site architecture.
You should NOT copy any of the content of the site in 1) above, just the architecture of the web site and you're not required to add any content to the new site (just develop the templates and link the pages).
Key: for the site you develop, the pages should be linked with same anchor text as in 1. above.
You should also design suitable head banner for the site.