Well the way I see this happening in the most organized way is picking 2 families (whichever provinces they are from) and setting them up in 'the city' at the royal court. We can start out with that, for example the 'plot' could be everyone is there to enjoy a feast held by the king. 

That way every character is at the same location, and we can get interaction. After that shit happens (as it tends to do) and then characters can go back to their respective provinces (so, we'd go to mountains and sea areas) where they will scheme. 

But I'm not sure how interesting the scheme thing would be.