Question about Kril

Hey all, I have full crystal + bowfa, RoS, Anguish and should be starting to grind GWD. First of all, I would like to do Kril, because of spear for ToA. I tried door altar method for a few times and got absolutely demolished by him. My current stats are 80 def, 95 range, 90 mage. My question is - should I level up my def and mage more (def for less overall damage and 92 mage for blood barrage). Is blood barrage a must if i want longer trips? I know its silly to ask for longer trips when I can't even do a single kc :D Any tips would be appreciated - currently trying for tormented demons and their scrorching bow (already made the emberlight). Thanks for any tips and maybe you could share how you learned this fight.