Hi there,
I can build the interactive map for you. I would draw a vector including the mentioned regions and would use the output SVG+JavaScript for regions to be clickable and work.
Once you click a region it would trigger the corresponding JS function, or the same function with a different parametter.
The only thing left unanswered and is a bit blurry to me, due to no WIX experience, the server side part, if any. I'll probably be able to suggest the best approach with least server side code if you can tell me where are you storing the data that needs to be displayed, in a MySQL/sqlite database, text/CSV file, variable in page, ...?
Looking forward to hearing from you!
Regards,
Julijan