Most kills are between 1,5min to 3 min. Most sims are done with a 5 min fight in mind. Shorter fights boost the value of pe. Also uf is worse no since our mastery doesnt benefit from it like before, meaning the lb and lvb have a lower % in our total dmg breakdown. With this in mind (although w/o doing any sims) i'd pick PE over the other talents.
EM is probably kinda wasted under Hero and Legendary Meta gem and our haste level. Also AS can be used to bring a fast EQ down to pad on those adds (although it can be precasted with out the CL perk)