I know that you don't use CFW but I suggest that you use it with tightened security.
Your router or modem also plays an important role when it comes to security. It is not always necessary to explore the exploits in your system through the internet. Many a times, a malware bug in your network may be doing it silently undetected. There can also be Zero-Day exploits in your router's firmware.
Regarding the hardware suggestion, to maintain the high security and performance, you need a proper high end processor and memory like Ci5 or more. Dude, Ci3 is becoming a thing of the past in the current world especially if you are a gamer or doing high-end computations. If you are good with it then all is fine.
Thanks but if i were to use CFW, i will use the Auto-sandbox. IMO that is the only & most effective way in CFW.
Yes, i know. I have all the beginner & advanced security options set in the modem config page. That is all their is to do with modem.
About zero-day exploits in firmware, nothing can be done.
Yes, i will love to use Ci7 8th gen but i can't afford that, & even if i can, i don't plan on wasting all that money for browsing & watching movies. I don't play games on computer, i already have gaming console for that.
EDIT: I am all for security but i avoid paranoia too.
Regards.