So many options, permutations, and variables!
I think for newbies like me, it's best to buy the minimal/simple setup based on budget and then learn after a season or two. That's what we've tried to do with our order but frankly b/c budget is a minor concern we leaned towards over building.
We could've done the panels ourselves, for example, but maybe the standard 3x 200W is fine. I have no idea. Try it out for a year or two and see... If it's not for us, then I could sell those or use them for a fun project, and build a custom setup like mentioned above.
In 2020 when I was ordering my 21NE build, I tried to get Escape to build what I wanted.
I had experience with compressor refrigerator, solar, inverter and batteries on my boat. In 2007, when I was in Mexico. I discovered I needed a different refrigerator system that could store medicine for extended time. I ordered and installed a 12-volt Danfoss compressor and refrigeration kit. I soon realized I needed a way to charge the batteries to keep it running. I bought a couple 85-watt panels, a controller, and had a machine shop make a stainless mounting system. Also, around that time I learned how easy it is to destroy 5 AGM batteries.
When it came to the Escape trailer in 2020, I knew I wanted to run the power system at 24 volts, the AC on Lithium batteries, and I wanted Victron equipment. Because I couldn't get exactly what I wanted (more solar and Multiplus Inverter/charger) from Escape, I decided to bite the bullet and do it myself. I ordered trailer without solar, battery or inverter. It was a learning experience. The main stumbling blocks for me were how to mount the panels on the roof and how to crimp the electrical connections. Also, the electrical distribution panel became a problem. I did learn quite a bit and would have done a few things differently had I known better. I have been happy with the system, and I have not had any problems with it. It just keeps working and takes care of itself with no maintenance other than cleaning the panels once in a while.
I understand completely when someone wants to go minimum until they figure it out and then build their own system. I learned a lot on the boat, and I learned a lot about what I wanted when I rented an Escape for a month in Arizona during late April - early May. Yes, it is more expensive to build what I built rather than order what Escape can provide but it is relative. It is also a lifestyle cost.
I went off mainstream for tow vehicle. Sure, I would like a pickup but don't think that makes sense for me. I have one vehicle, an SUV, and do not use WDH. I am comfortable with my choices.