How expensive is the armor stacker this league?

Outside of the whole 3P/1P voices setup, how expensive is it to put together? I scraped together maybe 500D (+MB) at this point, but not sure if I should even attempt to start this build?

I did some preliminary math and it felt like it should be possible on even 300D, fractured bases seem to be really cheap this league. But I'm not sure if I'm missing something.

Ideally I want to play the MB variant of the new Lightning Strike Armor Stacker, I did PoB some changes to get rid of all the 1P/3P voices in BigDaddy's PoB and it appear to have worked, but idk if it actually works like that, there's enough mana to attack, but its sketchy.

Am I delusional for thinking I can start this build on less than a Mirror?

I may want to farm maybe "easy" Valdos if I can at all, but mostly probably just regular Uber Bosses. My current build - FRoSS CoC - is an all rounder, but its not very easy to scale damage on it. Plus after playing it for three leagues I just want to play something else.

If there's a better build for Scion on my budget, I'm open to that too. I just want big boss dam and big boss tank - things that seemingly only armor stackers have since a lot of boss damage is big physical hits. I also kind of want to at least try armor stacking nowadays.