I run a very effective Angels tribal deck, take a look to get some ideas With white its not all about mana rocks, there are other ways to get stuff out like Cloud Key, Pearl Medallion, Urza's Incubator, etc.
This deck is horribly outdated, but should be able to give you some ideas: http://deckbox.org/sets/328648
Edit: I'll update my deck when I get home Monday afternoon and send you a link. It is very different from the version on deckbox currently