Is this the right setup for my iMac? Thank you in advance!

So I want to know if this security set up is the best possible for my good ol' iMac. :)

https://preview.redd.it/ku85lwnj9dtd1.png?width=1095&format=png&auto=webp&s=e3f66830104430f3df890d1e5a95b2df81f7bdbc