You had me at 3000 watt inverter.
At max power, that inverter will draw roughly 250 amps.
Your battery bank can deliver USABLE 117 AH.
You get to run that inverter, fully loaded, for all of about 25 minutes before your batteries need charging.
250 amps requires 2.0 or 3.0 cable...depending on the length of wire...like welding cable. This is a bad idea.
Learn the sad facts of life here:
https://www.rapidtables.com/calc/ele...alculator.html
Always use 12 volts for power consumed from the batteries...even 120 volt loads thru the inverter. The ultimate power source is a 12 volt battery bank.
Under good conditions, each 100 watt solar panel will deliver about 5 amps of charge per hour for about 3 hours a day. 2 panels will deliver about 30 AH during peak sun, then perhaps another 30 AH throughout the rest of the day. So you are running a 50% deficit with just two. 4 x 100 watt panels can just about keep up with charging 2 x 6 volt golf cart batteries under good sun conditions.
If you need 120 volt power, get a generator. You may use it a couple times a day to deliver 120 volt power to coffee makers, and such. While running, the genny will deliver about 30 amps of charge to a depleted battery in the morning. Run it for 20 minutes in the morning and you add about 10 AH. In the evening, after the solar has done its job, the charge rate from the genny will be much less...but still another 5 AH or so.
Believe it or not, Harbor Freight's Predator generator is highly regarded by Consumer Reports, and it's inexpensive:
https://www.harborfreight.com/2000-W...gaAhRnEALw_wcB
Install a smaller inverter for your CPAP overnight. My stepson uses one drawing from my 500 watt inverter, and the battery bank has PLENTY of power since the solar recharges next day.
My recipe:
1) 400 watts of solar
2) 2 x 6 volt golf cart batteries (Duracells from Batteries Plus)
3) 500 watt inverter for CPAP or to use an electric blanket to take the chill off the bed for about 20 minutes (360 watt blanket for 1/3 hour = 10 AH)
4) 2000 watt inverter generator for 120 volt loads like the microwave, coffee makers, and so on...and for emergency/rain-day charging. In crappy weather, we fire up the generator, play cards, and everything is hunky dory. Nobody around us cares, because they are inside, too...even tenters.
If you undersize the solar and plan on big 120 volt draws such as a coffee maker and curling iron, and if you run the stereo, lights, furnace and so on, you'll wreck your batteries. The solar should match the battery bank...or exceed. And if you're going to boondock, you NEED a generator or you NEED to give up on your 120 volt loads. And solar doesn't do much when it's raining like hell.