We have one Deity, one true Prophet (pesto be upon him), and one Saint so far (RIP St. John). I think that's plenty. (Oh, and a bunch of Forum Prophets. I'm not sure how they rank. I guess they just are rank.)
But since the FSM (pesto be upon him) is not a jealous god or anything, it's probably fine to believe in as many others as you like. Might as well, they all make about equal sense.
Open your mind, but not so far your brain falls out
"Hurry up, before we all come to our senses!" - King Julien