1> what 3rd party firewall are you employing is it Norton's ?
2> maybe add a second opinion scanner something lite like
HitMan Pro, just to be safe.
I like how lite your config is very good.
Remember we are only offering suggestions
Thanks for sharing.
Any privacy and optimization programs such as CCleaner?
Any browser extensions?
Any system back up solution?
Consider CCleaner or Privazer.
Consider one or two on demand scanners.
Consider some browser extensions such as HTTPS Everywhere and uBlock Origin.
Consider some type of back up solution.
Consider adding an additional browser as a back up.
Thanks for sharing your config