Switch your first judgement to wisdom.
You won't have enough characters to judge wisdom twice, if you have a reset condition. And you will want a reset condition.

I use a click macro, to call my 96969 macro.
Basically, if I press the click macro with the ALT key held, it stops the macro.
Which is useful for having the shammies nuke something at range, which will die before it closes to melee.
Without the Paladin casting Holy Shield.
Plus it gives enough characters to include a /startattack line, and/or /use 13 and /use 14 for trinkets.

You want the talent which refreshes Divine Plea, on a melee hit.
From the time you click it, it should be up for the entire fight.
And probably is available for the next fight.

You don't want the talent which reduces opponents attack speed.
You'd rather they hit at normal speed, which is extra damage taken on your part.
Similarly, don't glyph Divine Plea as that reduces damage taken by 3%.

You do want 2/2 Spiritual Attunement, for mana received based on healing received.
Possibly consider the glyph for Spiritual Attunement, depending on your mana issues.

I find I'm often mana deprived the most, with single pull after single pull.
With a lot of trash mobs, I am blocking so much, my Blessing of Sanctuary gives me a ton of mana.