Game mechanics question - Zombies/Absolution, phys 2 lightning conversion + Doryani's

Hi guys! Even though I been playing this game since Heist League (3.12) I still sometimes feel like a newbie, hence this thread.

Long story short: I've been playing Baron Zombie Necro (https://www.pathofexile.com/forum/view-thread/3038710) few leagues back. It was good so I decided to give it one more try but with some modifications:

Inspired by Absolution Summoner (https://youtu.be/SrfYKmAHF98) I started to think: hey, what about doing the same with my Baron build? STR/life stacking Necro with Baron @ Zombies + phys to Lightning conversion and Doryani's Prototype? Will it make any sense?

Let's say it at least looks promising, but which way to choose for conversion? Will Triad Grip (B-B-B-B) work better than PhysToLigh Support gem? And if I would like to squeeze in Sentinels of Absolution, how to make phys2light on those guys?

Thx for any feedback!