I made a similar deck go here if you want to see it http://www.mtgvault.com/siraugustine/decks/boros-deck-edh/. This is just a suggestion with all your humans add Champion of the Parish and Calvary Pegasus. I probably would get rid of Nav Squad Commandos and Devout Chaplain.
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I would recommend the card Primeval Bounty it will boost everything you play.