I've been pointed this way for SEO related questions and this one has had me pondering for a little while now.

I'm recreating a site's structure. The website's content is generated through several feeds and unless I want to place each and every - of the 10,000 odd - venues into their own category manually, I can't avoid categorising each item by using its address.

The current the structure looks like this

Homepage > region > county > city/town > venue page

and the URL looks like domain/region/county/city/venue/

I'm relatively happy to use this structure as it's not too convoluted. However we also promote deals and we also group the venues into their respective franchise, so that leads to URLs such as:

domain/groups AND domain/deals

My question is: how would the directory structure look with these new additions?

Would I have a URL that looks like domain/deals/region/county/city/venue or domain/group/region/county/city/venue and just put a 301 or a canonical link tag on the page to prevent the duplicate pages competing with each other?

Am I just worrying about it needlessly and perhaps link straight from domain/deals to the venue page URL domain/region/county/city/venue, this bothers me a bit though as the deals and groups will not be in the breadcrumbs.