Whats your opinions on storing bitcoins in the Bitcoin core wallet on a home PC with a strong password and regular malware scans?
Much depends on the OS you are running. If you are running a current version of Linux or macOS you'll be in better shape than Windows 7 for example.
What else is running on your machine? On your local network? What firewall and router are you using? Is it connected to the internet?
There are many variables.