which tree to go with smite buildFollow

So I'm finally past the 49 BGs bracket and am heading higher with my surge of light specced smiter priest. I don't see anything of value further down the holy tree, so I am wondering which objectives I should pursue for PVP at level 59?

That is, should I go shadow and pick up blackout, mind flay and silence, or pick up inner focus and (1/2 improved) divine spirit (to go along with the 5/5 spiritual guidance)? I am also unwilling to give up spirit of redemption, so I need to keep 28 points in holy (leaving 22 for the other tree).

Please refrain from 'respec to shadowform'.

Thanks.

There's anything of value further down the holy tree? What about Blessed Resilience? Imo it's a great PvP talent especially against rogues and warriors and you don't need to spend many talent points to take it.

there is no spirit on pvp gear. meditation and DS are irrelevant.

pvp is largly about instant cast spells. consider mental agility.

dispel is hugely beneficial in pvp. consider absolution.

i don't recommend silent resolve. if someone is hell-bent on dispelling your buffs, do you think 20% resistance is going to stop them?

spell warding is 10% less damage. this is a pvp talent. shadowform give 15% dmg redux vs physical dmg. this gives 10% redux vs spells... should it be called holyform?