If you're 3-healing content (most guilds do this, including mine; it's the "safe" thing if you don't have a super awesome team) with a pally and a priest, those other 2 healers are *absolutely* going to be keeping your hps down unless they are afk or absolutely beyond-redemption-terrible.
re: the missing enchants - think of it this way. If you enchant every piece of your gear, you basically get stats equivalent to an EXTRA piece of gear. Don't ever slack on keeping all of your gear enchanted.
(yes, rofl, I know I'm missing a chant on my bracers - small guild, and the enchanter'll do em up before we start our raid on Sunday).
You'll also notice some benefit once you can get rid of your PvP items. I know PvP gear isn't as much of a no-no in MoP as it was for raiders in Cata, but you are still missing out on some secondary stats you'll gain when you get replacements for those pieces. Be on the lookout for a good MH-OH combo, instead of staff, since you get to use 2 chants with a MH-OH combo instead of just the one chant you can use with a 2h wep.
re: gearing strategies - I see you're forged out of Mastery, and gemming for Crit. Now, while Mastery won't be as useful to you if you constantly 3-heal with a Disc priest and a pally, it's still recommended that you work towards 45 - 55% Mastery before reforging for anything else.
Once you've got your Mastery at the 45%-ish level, go ahead and focus on Crit if you'd like (bigger heals when you get a crit, yes, but also procs AA, and helps on mana regen), but don't neglect Haste once you get your 2-piece T15 bonus (every time your HST ticks, a second target gets a heal worth 25% of the tick). Haste *is* buggy for totems atm, but once you have gear which can give you above 3764 Haste (... I personally waited until I could get 4k Haste) without impacting your Spirit or Mastery, the extra HST & HTT ticks are a big deal.
3764 is the proper breakpoint for HST & HTT, but depending on your latency, you may not always get the extra ticks you should if you sit right *at* the breakpoint. It's recommended to pad totem breakpoints generously to help maximize the consistency with which you get your extra totem ticks, if you're going to aim for a totem breakpoint.
GL and have fun!