Everything looks fine gems enchants etc, but I am prefering Mastery passt 7,5% Unbuffed haste. But that depends on your role in a raid.
I myself didnt take Surge of Light because sometimes it procced at the most stupid moments. I took the 30% of my HP self heal and i maxed out Blessed resi since I wont be spamming renew. I got the normal CD on renew. Rest is the same. I also have glyph of Lightwell instead of GS. But that depends on your raiders they do need 2 click the lightwell. It is je best healing per mana. 15 charges which heal for rougle 13k for 6k mana.
Rest looks fine imo.
Your gear looks absolutely fine. The Stat Priority for Holy Priests goes something like this: Intellect>Spirit until you don't go out of mana>Haste or Mastery (pick one)>Haste or Mastery (pick the other)>Excess Spirit>Crit.
Talentwise I would drop Veiled Shadows (it doesn't really do what you want it to do.) and put those points elsewhere. Desperate Prayer or Blessed Resilience are good picks.