PoE Champion, Lightning builds without Fortitude

So a simple question. I have started as LA Ballista champion. To explain what do I follow, is EA ballista, just swap a gen to LA with following changes to tree, items and gems. gameplay has to stay the same as EA ballista champ. &x200B; Is this actually possible? What path to follow: crits, frenzy, flat ele damage, flat phys to ele? What should I do, or just give up, and make something decent? Pob what I have got so far &x200B; thanks in advance!

TL;DR - I think you can become very tanky as a living punching bag but have no idea how you would actually finish a map sometime before the league ends. There is a new stun mastery that reads Gain Adrenaline when Stunned, for 2 seconds per 100ms of stun duration Using Valyrium or the Stun Threshold ES mastery, you can essentially turn every other hit into a stun if you keep your pool of es tiny and don't leech any. Now of course standing still and tanking hits in this game is absolute suicide, but because you will be gaining adrenaline on every hit you can use First to Stri