Nice configuration. Disable AutoRun if you haven't to mitigate USB infections. Also you may want to install an anti-exploit program like Malwarebytes Anti-Exploit if you have Java installed. The free version shields Java, Browsers & Add-Ons. Set Flash Player to click-to-play in your favourite browser to protect yourself against flash player zero-day vulnerabilities.
You can also use the beta program from Zemana it also has anti-logger support so then you can get rid of Keyscrambler. Ironically even though I am a Malwarebytes Fan exploits are pretty rare and I feel like MBAE isn't needed but you can decide that yourself.
Nice and strong config. Adding Zemana AntiMalware for on-demand scanning would be recommended like TheBlue262 said.
It's free without realtime-protection. A license is only required for the realtime-protection of Zemana AntiMalware.