1- Since I had a windows 10 machine, I just downloaded that exe and ran it. Is there a compelling reason to wipe the machine, install linux and run that instead? Note: this machine is dedicated to just being a node, so I don't do much else with it other than browse bitcoin topics. (pc is an older core I7 w/12gb ram and 1.8tb ssd for the bitcoin data
Yes there are many reasons why Linux is better in everything compared to wInD0ws OS.
Linux is open source, nobody is going to spy on everything you do, you don't have to pay anything and you don't have to use pirated software because Linux is free, it's easy to install and usually there are no separate drivers to install.
For older computers Linux running Bitcoin node Linux is much better because it can use less resources if you choose lighter distribution and desktop environment.
2 - Is there a place where I might find an experienced person to provide some guidance and education regarding running a node?
You are allegedly running Bitcoin noe for months and you are now asking for guidance and education...
There is no nothing complicated about that, and g00gle AI can answer most of your questions already.
4 - Is there a consensus here are the best way to setup and maintain multisig?
Oh it's multisig guy again
No there is no concensus about that and your writing style and questions looks very familiar... I don't think using alt accounts in this way is going to be beneficial to you in any way
How many forum accounts you made so far?