He is very handsome and I also had to go with Bongo!
The males will be much more vocal in general.
The bar pattern that TX mentioned will also be visible on the tail feathers of females, though on a fancy, it doesn't always mean female.
This guys cheek patches are very bright, too, and the males are generally more brightly colored.
I like the name Sophie best, but....We had a cockatiel named Paul who ended up Paulie after he laid an egg!!