I love and hate this deck at the same time. I love it because I'm big fan of White Weenie decks and I haven't seen anything new and fresh in Modern lately that would at least look similar to typical WW - everything is either 5c Humans or DnT.
On the other hand I hate it because there are so many choices I don't understand in this list like 1 of Brave the Elements, Charming Prince & Mangara of Corondor are really random. Also True Believer is something I don't understand as this deck doesn't seem to be in real need of shroud/hexproof effect from discard and other stuff.
Playing some other strong 1-drops though makes more sense with Ranger-Captain of Eos already in the deck, e.g. Dauntless Bodyguard to protect stuff, Kytheon, Hero of Akros being strong and resilient threat later on and in SB Burrenton Forge-Tender instead of Kor Firewalker and even Martyr of Sands vs matchups where this life gain burst is godsend (burn, GDS, etc.)
Dunno if Basri's Lieutenant is even that good, or at least better than Hero of Bladehold.
Manabase-wise I think you could up the Canopy lands count to 3-4.
Nevertheless I will happily try it on next FNM and see how it rolls.