7-8 is good however you should be offering at least 3 different types of feeders. Dubia roaches, silkworms, hornworms and some of the best along with occasional super worms. You should be gutloading crickets, dubias and supers with collard or turnip greens, shredded carrots, sweet potatoes, squash and a little fruit like apples or oranges. Your chams feeders need to be healthy so your cham benefits from that. Also, bee pollen is a great gutload and should be crushed before fed.