Very smart. Me and the missus were the same 20 years ago and now I work part time by choice.Yeah, we are very sensible.
We save $5000 a month, we don't live anywhere near as much as we could/should, but we are all about the longer term goals.
You sound like you'd be good with one of these
If you have access to a line of credit that doesn't incur fees for carrying it and you have some self-control, it can be argued that you don't need an emergency fund.
I'd argue most people (myself included) probably shouldn't roll the dice with just a line of credit, that said I feel that 6-12 months is too much, 3 months seems like the happy middle ground.