Another really good infinite mana combo is Palinchron and Caged Sun. Cast palinchron and float while caged sun is on the field targeting blue, then float all your mana that was untapped to return palinchron then recast, do this for infinite then use your snake or if you want to have more fun, Blue sun zenith them for 67,573 just cause you can.
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The only problem i would have with this deck is the mana flow, otherwise this looks great! My suggestion is to add some Broodwarden's . http://www.mtgvault.com/ViewCard.aspx?CardName=Broodwarden&Edition=ROE If you want more ideas look at this one. http://www.mtgvault.com/ViewDeck.aspx?DeckID=319161