The Win7 ACT is no longer available from microsoft but I did find a download on cnet.

Microsoft Application Compatibility Toolkit 5.6 is what you are looking for. The EXE you download will have a digital signature from Microsoft from back in 2010/2011. I verified the signature plus did a virus scan as I could no longer find the installer on my system. If you are interested, I'd be willing to host on a google drive and try and walk you through what you need to enable everything including the Extender Discovery Tool which I also created compatibility mode for.

Yes, you're correct in that there are a lot of hurdles to go through to get this working but once you do, it is pretty much Rock-Solid.