Latency hasn’t been an issue at all. CGNAT has been a problem but I use zerotierone to combat that and access my devices when I’m out and about. What port forwards do you anticipate needing?

Don’t get NBN it’s trash. Fellow data hoarder here. I have Optus 5g which routinely gets up to 400 down and 80-100 up. Also. Zero installation costs and if you move, unplug and replug and you’re good to go. Edit to add I am in inner city Melbourne