Firewall section

This is an amazing idea as a software firewall is necessary for most Windows 10/11 users:

Originally, my plan was to setup a HARDWARE firewall device that’d connect to my Router but then I realised that this entire firewall device could be bypassed if a Windows PC has a backdoor way of communicating to a malicious user online.

My thread may help you:
Software Firewall for Windows? - #75 by Average_Joe

You forgot to mention Safing postmaster which is open source and cheap: