Sorry I was away. Was at work. Super worms are considered high in fat as are pinkies. Only use them as rare treats.

The 15 minute rule is best, as noted above. It gives them plenty of food, but does not encourage obesity. It will keep them healthier than letting them gorge.

I am not a fan of moss if you are going to let them eat on top of it. It you tong feed or bowl feed away from the moss, that is fine. Feeding on top of loose moss can be risky...if they accidentally eat a piece, it can cause serious impaction. Moss is fine if you're not going to feed atop it.