Zascar,
Sounds like a good idea.
I'm sure you have found some of these on google but just in case:
Joomla Templates, Components and Free Downloads for Joomla CMS Joomlateam.com - Home
Also, if you are seroius about this site , and you have a bit of cash, maybe you could use something like
Joomla Freelance Jobs and Projects - Joomla Programmers Webmasters Designers - Joomlancers.com. A place to get custom design made / converted