My boss wants a "mini-site"??

So my boss wants a sub-domain I think but I’m not sure what to do with it… These are the list of requirements he wants, please let me know if they are possible to do with multisite:

-The URL of each minisite should be like: https://www.whatyousee.com/houston
-The franchisees need to be able to edit their information without logging into wordpress. An online WYSIWYG HTML editor should be available for them to update the different parts of their website like Staff members, hours, holidays, specials, ect.
-Franchisees should also be able to change the name of their website
-Make sure the minisite has its own SEO capabilities
-Each minisite should have a blogging option
-On the parent site under locations, we should have a list of available franchise locations or potential territories
-A process to create a new minisite for new franchisees.

P.S. I read somewhere that you can’t use sub-categories if the site’s been up longer than 1 month. Is this true? Because if it is I need an alternative tocome to my boss with… Any and all help is appreciated!!!