How are you finding the folder for Webroot?
Comodo FW is a great idea to use. Have you also looked at/thought about Tinywall or Malwarebytes Firewall Control? Both are very light, as i know this is your mantra for your setup here.
~LDogg
99 MB after 3 days in webroot folder....MFC is nice, I installed it and made BU Image, then I installed the new Comodo FW 2019 Version, with CS settings, so far no missing icons ETC.