Installed the Heatsink and MB tonight. I'm waiting the GPU and Ram, which will arrive tomorrow allegedly.
I had purchased a contact adhesive, 3M 90, to hold screws while I fix my grandson's train. The train still needs fixed but, it worked great on the screws for the Stand-Offs. I think it's a liquid version of sticky notes.
I'm going to hold off on connecting any cables until the other parts arrive.
It was probably the best job I have ever done on installing the I/O shield and matching the MB ports to it. Satisfying moment!