Watchguard Firewall for Home use?

I don't think that you can be careful enough with your digital security these days. Keeping your data safe including your crypto currency can be a daunting task even for people that know what they are doing.

I recently upgraded from a Linksys router to a business grade Watchguard T10 hardware Firewall.

It did take quite a while to get it working correctly, I have over 60 internet connected devices in my smart home, and that turned this project into a multi day head banging exercise.

However, now that I have it working I have a better sense of security. I am playing around with Kali Linux and trying to see just how secure my network really is.

I am running a second LAN for the kids and all of their games, laptops and printers that is on a separate network. I didn't want one of their friends infected phones to ever be able to touch my network with mining equipment and PoS servers.

Am I just being overly paranoid or is there other people out there who are installing business firewalls in the house?