I have finally been able to create a character using the custom rulesets, after doing a full reinstall and removing all third party mods from my folders/BG3MM. it seems even if the third party mods are in an inactive state they cause issues. I imagine both the reinstall and the file purges fixed it. I'm only running with in game mods from the supported loader now and it's working fine, so if anyone has issues like I did just purge everything entirely; RIP any previous saves though!!
Feel free to collapse/delete/save this thread. Thanks!
