You should be staying on TRT. It is for life so you don't come off. All that receptor stuff is nonsense. Just people trying to overthink and complicate things. I would also be taking the RAD and Nutrobal daily. You do not need a PCT at all. Whoever recommended clomid missed the fact you are on...
You just have to see where the blood work comes in, how you are feeling, and then you may have to question it. It can take a while to dial in a proper TRT dose but you should definitely be dosing it weekly, not bi-weekly.
GW is going to be great for helping get rid of that bit of belly fat. I would focus on that first and once you lean out more, look to run something else to help add lean mass.
Lol, you are good man. We have plenty of "older" guys here, including me. Bitcoin is actually so incredibly easy to use. It is just because you haven't done it yet. I use coinbase personally.