New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
Although it's possible to play Sites in T1 MP, it's usually better to focus on rescuing souls rather than defending them. Like crustpope said, you should add 3 or 4 more Heroes. Also, I'm not sure about your strategy of getting a high-numbered Moses. Those set asides are time consuming and the game will most likely end before you finish boosting Moses' numbers. Moses and FBN in general can be good in multi, but setting them aside just takes too long. Such a strategy would be better suited for 2-player, where it's not a hectic rush to 5 souls.
what you need to rember that at a higher end multiplayer game most likely the game is over in 5 turns if not less. SBecuase of this Water to wine and Chastisement are would hurt more than help. Your speed is also in question. T1 multiplayer = speed 100%. I see one drawing card you probably want more.
TGT is very powerful in multiplayer. If you had a tgt deck available, then I would make it my multiplayer deck.