PoE The Ivory Tower, Occultist, Critical builds

Hey guys, I'm looking for your opinions/advice on my seals-mana-BV Occultist The main thing I'm trying to achieve with it is smooth BV gameplay (that's why I'm using seals) with high surviveability (potential MOM, but not sure about it) and solid DPS. I chose Occ over Inqis because of good clearspeed and smooth ES regen, also Inquis is boring :) P.s. This is a template build, empty slots will be occupied by rare items.