How much solar power do you have, wish you had?

I have always read 1 watt solar for 1 watt battery reserve. I two 27 series AGM's for 180Ah, and 200w solar. Some times at night I have been going out to camper in driveway and streaming 2 movies on TV (plus heater has been running).
Next day batteries charge right back up. But in about a month we start boondocking long weekends so we will see.

I laid out the current wiring with plans of adding one more panel. All I would need is the mc4 adapters to plug it in. my wiring will support 300w current.