Congratulations on resolving the barking problem so quickly. Apparently it wasn't seperation anxiety but just an annoying habit.

I'm a firm believer in feeding twice a day so their stomachs are never completely empty. The possibility of digestive upsets are also greatly reduced with this method.

I agree that leaving food and water in the crate is setting him up for accidents. Leaving food and water in a crate is not necessary unless the dog is going to be in there for hours and hours. They should only be fed when someone is going to be there to let them out within the next couple of hours.

A baby gate in the kitchen is an excellent idea.