I’m tired today, so I can’t go into a lot of details, but are you aware that smart things only allows for one hub per “location”? It’s pretty hard to tie two hubs together and each one can only report on the devices that are joined it. I don’t know how action tiles handles multiple locations, though, Since I know you’re mostly interested in the display. @tgauchat Will have to comment on that part.
What makes you think that you’ll need two hubs?
In lieu of other details, I’m going to link to a how to article in the community – created wiki on automating an out building which has a lot of discussion about two Hub management.