Happy Gilmore's experiences from That One Time are hardly enough to draw any conclusions from. He was sick that day, and he had never played the deck before.

I also know, from reading Zu's report, that Happy sideboarded Chalice in against Zoo. This is awful. He ended up getting manascrewed because he had multiple acceleration enchantments in hand after he played Chalice at one.

The deck has 16 lands, three Chrome Moxen, and two Elvish Spirit Guides. It also has seven one-mana enchantments that produce mana. The curve tops at three and the deck draws billions of cards past its third turn. There is no need for more lands.