[daplunk]

I tried to do this but it really adds a massive amount of prep and at the table work-load on you as the DM.

I have a similar setup and can I just pass on feedback that it is much easier to ignore the dynamic LOS functionality and just use the standard reveal polygon method.

MapTools does everything you need for free. It has a dated interface sure, but for what you need it does everything efficiently. You barely need to interact with the interface of the application.

Arkenforge is another option. It's designed specifically for at table play and supports animated symbols which is a huge bonus imo.

There are others. I'm exploring Foundry but my take-away is they are all designed for internet play and have so many bells and whistles. Way beyond what I need.

I use Arkenforge currently for the animtion but i prefer using MapTools.