Duel in Paradise

The link doesn't work.
I focused on functionality rather than aesthetics. The mines should be easy to capture, and I have 5000 peasants and 2500 red/black dragons for experience.

The link seems to be working fine; perhaps you're having some issues. I'll upload it directly here.
If the mines are easy to capture, then guarding them isn't necessary. You could also add more experience to a chest.