Thanks, I had help building that one as well. As for the life gaining, it depends on what I draw in my opening hand and then the first few turns after it. I manage to draw at least one Sunspring in my opening hand, at most has been two so far.
Later on, once I can get Battlegrace and/or Wall of Reverence out, then my life starts going up like crazy (unless I get burned like crazy xD). But as I mentioned before, my deck isn't fast enough to last against most of the better Type 2 decks (Naya, Jund, Red Deck Wins, Blue/White Ally Mill) yet.
My white deck is basically what Aaronock called it earlier, an Emeria Control deck. A lot of cards to keep my opponent from attacking while I gain life with Sunspring, Battlegrace, Soul Warden, and Wall; and pump out tokens with Sigil of the Empty Throne. At the same time, I can use those creatures to get rid of his.
When that fails, Day of Judgment or Martial Coup help a ton.