I'm not sure I've seen an armory link posted to your characters, but I know you get "Glyph of Hungering Cold" which removes the runic power requirement:

[item=45800]Glyph of Hungering Cold[/item]

One thing I've done a little different on mine is skipping the end talent "Divine Storm" in favor of "Blessing of Sanctuary" for the paladin I've given the devotion talent to. Increased 10% stamina, 10% strength + 3% damage reduction seems nice.

Thinking a little more about the macros, maybe a better option is:

/cast [target=arena1,exists,nodead] Hammer of Justice
/cast [target=arena1,exists,nodead] Repentance

I think if the first one fails due to range, it'll at least try the second one.

It's gonna be sad day for me this week when they finally ding, as right now I'm destroying everything in BGs.