If you can get Lithium for a good price, that is probably your best bet. I chose lead acid golf cart batteries. My setup is described in this thread:
Scroll down to see the paragraph on the batteries.
I’m fully self contained with 235 amp-hours (two 6 volt golf cart batteries) and 360 watts of solar panels. If I didn’t have the compressor fridge, 200 watts of solar would be enough. We have boondocked for 6 days with no problems. In fact we have never seen less than 70% charge on the batteries even after 2 rainy days.
Of course all this assumes that you don’t need to run the air conditioner. I have to plug in for that.
Everyone has different wants and needs. This is just my data point.
Happy to answer questions you might have.