Hello
Blackhawk. Thank you for sharing your configuration with us. Keeping your set up simple, light, and those safe surfing practices, are good tenets to follow. I was about to recommend CCleaner before noticing it listed under "Other software".
I had used it from time to time for months before reading about it described as a privacy software because of it's removal of the temporary means (cookies & temp files) by which our privacy online can be compromised. It's also safe to use daily.
A free software, one I did not see on your configuration, is represented on my signature space below. It the symbol that looks like a yellow kite missing it's tail,
and is called Sandboxie. It was originally developed to address vulnerabilities in IE browser by providing a layer of protection called a sandbox, hence Sandbox-ie!
I liken it to wearing a rain coat on a wet rainy day because it keeps me safe & dry, and our family uses it with Firefox except when updating. It renders additions, and changes made to your browser temporary as all changes & effects remain in effect only until the sandbox's temp content is safely deleted. This is the nature of how it protects your system from unwanted changes as well.
Read about it, so you can decide whether it would be something both light and simple for you!