crit unholy pvp

Whispering Fanged Skull trinket
5% talent from blood tree
3% crit from pve neck
maybe more crit from other pve gear (crit or agility)
maybe more crit from gems
wandering plague talent
blood strike, plague strike and scourge strike would benefit much since there are talents that give them higher crit chance
runic focus passive allows our spells to be 2x critical damage

what do you guys think about investing heavily on crit as unholy pvp?

46 crit rating = 1% crit chance

wasting so much gems on crit is usless in pvp because of pvp gear that is dropping crit %
so better go for 5% hit > 130 spell pene > str > haste > crit