3G/s and a SSD might be able to saturate it f you’re lucky.

The one is bits the other is bytes ;)

Network…3 gigabits, while a decent nvme gen 4 can do 4-5 gigabytes

Even old SATA connected SSDs should be able to keep up if you don’t buy trash.

Opnsense firewall at perimeter…and that’s about it. Chances of anything getting in with no exposed ports is pretty slim so I don’t really bother with anything more.

For SSH exposed servers/VPS I do change the port though. Cut down log noise & maybe dodge the odd portscanner or two

Might as well if it is available.

Think it’s going to be expensive to kit of the home in a way that can actually make use of it.

…and then find a server serving anything that fast.