Implement some type of system & data backup solution. Both Macrium Reflect and AOMEI Backupper offer good free options.
Consider backing up important data to an external drive also.
Have you considered upgrading to Windows 10?
Consider an additional on demand scanner(s).
Consider uBlock Origin,HTTPS Everywhere and Privacy Badger in Chrome.
What program Defrag program do you use?
Consider a password manager.
Thanks for sharing your config