You're just wrong that every vehicle is overpriced, it isn't 1980 any more, and those Fords were turds on wheels anyway.
Compared to a 75,000 mile Frontier, Mavericks are absolutely not overpriced. Young people's "problems" (which face it old people said about your generation) don't have...
Do people not see the prices for everything? Nobody's bought eggs recently?
I posted yesterday a 2019 75,000 mile Frontier SV for $25k, so go buy that if you think Mavericks are too expensive.
You have effectively zero chance to put in a bigger screen.
I'm sure with enough effort you could print something to hold the screen that didn't have a cubby. If you do so expect no warranty work on anything sync related because one look at your new setup & any dealer will punt it right back...
For those wondering what truck are worth, I give you a 75,000 mile Frontier for $25k. A Maverick at almost any price can be a good value if you need something now when this is the alternative.
https://www.cars.com/vehicledetail/df495bb5-7334-421c-9f57-557922f71f1c/
The back seat battery would be easier to route to from the bed than under the hood. But as mentioned, I would try the accessory power in the little plastic covers at the back of the bed. The truck comes with one pigtail to conect to it, probably was under oyur back seat.
This thread has been going for a while, but I have a small 12V fridge and it works okay if the drinks are already cold going in and you don't want them ice-cold & it isn't outside in the summer. Basically you ghet a 4x4 inch square in the back that gets below frreezing if the fridge is indoors...
I've said it in other threads - Ford sells like 75,000 F-150s a month, at an average price of 65 grand. That's where the money is. They are not worried about some other manufacturer selling a hybrid AWD and stealing Maverick sales. They are worried about Mavericks stealing F-150 sales.
The ratios are 3. 47 and 3.63. So a 4.6% increase in rpm for a given speed. I doubt it's a measureable change, certainly your foot will be a bigger effect.