Vaal Flicker Strike "The Impaler" Berserker

https://pobb.in/tzcneu5K9LFa

I tried raider, but impale is phys, so that didn't make much sense.

I tried Champion, but "The Impaler" caps at 5 impales, so getting sources of +impale didn't make much sense to me either.

Slayer makes a lot more sense, especially with its base crit and the buff to Kitava's Feast (which has doodoo base crit, if I'm not mistaken)

I chose berserker because it has a lot of easy damage up front.

This POB has theoretically 2.5M DPS, but I think it'll probably average much less than that. I'm relying on Impaler to help my clear (does melee splash apply impale damage?)

I plan to run this 70-90, and then swap into a Farrul's Fur in order to start flickering without Terminus Est (and once I'm there, if The Impaler really does work with this setup, I'll probably just craft a thicc phys weapon and keep going, otherwise I will probably swap to MF or something and run harbinger / essence on T10s with a 2 voidstone setup.

Any advice? ChatGPT suggests that I play Juggernaut instead of Berserker, as its MUCH tankier, but I think it's advice is outdated (sadge).

I'm torn between Slayer and Berserker :)

Edit: wanted to note that the POB is level 70, so definitely a lot of space for points, but wanted a smooth leaguestarter