Only big complication is the toaster oven. Drop that from your list, use a camp stove. A good quality deep cycle marine battery in the larger range 85-90+ amp hours and 80watts of solar would easily meet your needs. Skip the big inverter, just add a 12volt socket to use a small cheap inverter for the laptop charging, that can be moved to the cab to charge or power stuff when on the move.
Plus a 12v usb puck can be used either place also to charge phones etc.
The basics you have solar power that goes to a solar charge controller which is wired to the battery. The controller monitors the battery and manages the charging. Then you have a small fuse box powerd by the battery which then is tied to your power needs, fridge, power socket, lighting etc.
Think of amps like you think of gallons of fuel. But consider only about 40% of a batterys amp rating usable.
So for basics say you have a 95 amp hour battery. And you can lets say burn 40amps without taking the battery too far you damage it etc.
Most typical fridges burn 2-3amps an hour thats a conservative number but a fair one to use. Say you have worst case 13hrs where solar generation is more or less zero. 13x3amps =39amps burned. So with no other power needs the fridge can run on that battery for 13hrs.
A 80 watt panel will generate a conservative 5amps per hour. Most likely more in ideal conditions. Lets say your fridge is only burning 2.5amps then your putting 2.5 amps for sure back into the battery plus powering the fridge during solar hours.
Ok so your charging 2.5amps per hour back into the battery. Lets say you get a solid 10hrs of solar charging per day your putting 25amp hours back into the battery.
Thats the very high level thought process you need to use to map out your power needs. Then you size the battery and solar to cover your power needs. Use Amp hours as your fuel guage if you burn more than you store or generate your use is too high for the storage and generation etc.
The last 4 yrs I have been using two 10watt panels that charge a small deep cycle 18amp hour battery. We use this to power LED strip lights at night, charge phones, ipads, cameras etc. worst case use I see 6amps burned a day. Typically less. My whole kit not counting panels is housed in a single 50caliber ammo can, battery, charge controller, fuse box all in the ammo can. My two 10watt solar panels typically generate 1-1.5amps per hour sometimes a little more. This has been enough on the CA coast where 4-5hrs of fog free sun covers my typical power burn.
A fridge power requirement would need at minimum 80watts of solar, and a big deep cycle battery with lots of amp hour capacity etc.