Omg yes deffo! I'm loving every part of it!!

Yeah I was gonna suggest getting him back into the Capital will be hard. Maybe it takes a few weeks? Cause each day will be different. One day could be the struggle of food, another could be maybe some lower rank members of hope finds them and they have to escape their cluthes etc. 

Plus I quite like the idea of one of them getting sick and struggling to find medicine.

That way Cas also gets to really see what outside of the capital looks like too!

Cause with all that they would have a deeper bond making it all the more heartbreaking when roles are reversed haha.