the size we'd need to power everything we'd want to power in an outtage would run us around $3800 installed....

The only thing I can't tell is whether my gas bill would take a Goliath size hit from running it for say....2-days...

The longest outtage we've had was 4-days a few summers ago... I'd have gladly paid $3800 to have A/C during those few days.... My wife was pregnant...we slept on a blow up mattress in our unfinished basement because it was just that hot.