Because life and darkness nymphs only cost 2 to activate, I think I'd drop one of each of those pendulums and add one more each of earth and fire, since they cost 3 to activate. I'm not sure whether that would actually help very much at all, though, and there isn't really a way to speed the deck up without cutting one of the main ideas from it, and I don't think it can be made competitive.
However, because you managed to come up with a deck that I had not previously considered, which is a very rare thing, I gave you +reputation for doing so.