Would really appreciate some input on what I should add/remove, etc, particularly worried about people being able to see what I search and whatnot, and I obviously need some sort of malware protection.
Everything looks very good! If you want more privacy you can add to chrome an extension called "HTTPS everywhere". It makes HTTP connection In a lot of websites. If you want even more privacy you can use Zenmate. As said in their site:
ENCRYPTED & SECURE CONNECTION
At home, traveling, or on a public WiFi – ZenMate encrypts and secures your connection, and protects your privacy while browsing. No sniffing, tracking or wiretapping. 100% Security – 100% Privacy!
Malwarebytes will keep working as a scanner only even when your licence is expired. The licence is just for live protection. Thanks for sharing With us your config