Firstly you got way more adapter and cables than you need. Question: do you wanna connect the egpu through mPCIe, m.2 or tb cable? If one of the first 2 are correct go for the EXP GDC BEAST (https://www.amazon.com/External-Independent-Expansion-Graphics-Notebook/dp/B07L4GP5PT). If you want through tb tho go with the m.2 option and plug it in your tb to m.2 adapter you already have. ADK link is kinda known to have some issues sometimes and I even problems. Truth is that I’ve been using the EXP GDC adapter for 2-3 years now and swapped many cards in and out of it. No problem. As for power on it you will only need to connect its package coming adapter (24pin + 6pin ) 24 pin so the adapter can use the psu, and any additional power requirements for the gpu aka 2 6pin or 2 8 pin or 8pin + 6pin.