Jimmy,
First thing is shut your inverter remote panel door, don’t touch them. When you shut down make sure the electric water heater is off. Your water pump will automaticly switch to the 12 v pump.
About all you can run thru the night is your fridge which will be fine and a couple lights and a tv or two for a while. If you pulled the halogens and have led lighting thats a bonus.
You can learn to monitor your amp usage by leaving your front dash techlink screen on thru the night. Go to the 12v and 24 v screen, it will be green. The bottom of that screen shows amp usage, a couple of lights and a tv will be a a few amps. This will help you determine how strong your house batteries are too. As the night goes on and if you get up to piss you glance up front and see the techlink screen to see if its green yellow or red.
I can stay in the green for about 8 to 10 hours going this route. There are other ways to do it but this is a easy way for you to monitor your usage and learn how things work.
As you know you have a couple choices to look at your techlink screens, I just like the front for my preference.
If you get stuck call me.
Later
bv