Sorry bro but I'm no expert when it comes to cichlids, but I do know a thing or two about FHs. Is the Dovii of the Cichlasoma family? Because FHs easily breed with the cichlasomas.
I am just the opposite of him I know cichlids and not really flowerhorns. I would expect them to breed successfully and having a female dovii is better because the males are usually not too friendly with their mate