Update: I've got everything I currently know I need for the swap. My attention is currently (split, if I'm being honest, with my ongoing S4 projects) focused on the engine rebuild process, mainly with head work, and after everything is in the machine shops hands it'll be onto the subframe and suspension refresh for me.
It's tough to say who on which forums may also be the the folks who have reached out on IG with help but I've really appreciated all the people that have aided my information and parts searching since I started the S8 project. I'll need more of it in the future