UlaO..M..G deck help

http://tappedout.net/mtg-decks/ulaomg

I am looking for some help/suggestions with making this deck atleast one turn faster. Right now I am on a steady t5 Ulamog. I am wondering if it is possible to get any faster? Is there any kind of combos I could add to have more win cons? As well as what are peoples thoughts on doubling cube in this deck? Thanks in advance.