Welp everyone, after a lot of trial and error, I have my first successful launch. Looks like one of the GPU Risers may have been bad. I swear I tested all of these... but I guess one of them died pretty quick. Anyways, I'm gonna let it run while I go to sleep and will check in the morning. Hopefully this fixes everything.

Lesson learned. It's always the damn risers. Even when you swear it isn't.