"Hints on how to convince the other half we need a Royal greatly received "
Well seems like you have a few furrys.
If they breed you don't need to go through the mither(apparently not a word) of trying to sell, adopt or re-home them, as its free, easy and plentiful food for!
Though that might not fly with your other half.
Has she seen them?? They're naturally one of the most beautiful snakes, next to rainbow boa's.
Obviously! lol