Today I decided to go ahead and add 2x100 watt portable solar panels and another 250 amp hour lithium iron phosphate battery to my 211vdbx trailer.
After some confusion and incorrect quotes over SMS, I finally got the final bill:
Its a bit more than I expected but after doing some research the prices are not marked up that much. Hourly rate is $190/hour USD (Gilroy, CA) which these days seems to be the going rate for just about kind of vehicle related labor.
I will let you know how it works! I will be renting an off-grid parking lot so I decided to give me a little more freedom with the A/C to add a bit more power (about 50% more).