Would it be easy to replace the windows in a 2000 Ford Explorer?

I'm thinking about getting a 2000 Ford Explorer Limited as my next car. I like the Limited over any of the other trim packages. I don't mind the privacy glass that came standard on the Limited. I think it would look really good without the privacy glass. The base model had clear windows all the way around. I was thinking of getting the rear windows from the base model. Would this be an easy thing for me to do to this car?

Yes. Just find an old junker in a junk yard to get them from. Start with taking the junkers out. That will give you a really good idea on how each window comes out and if one breaks the junk yard may not charge you, unless you break several.

Sure you can take the door panels off and replace the glass, maybe a junkyard would give you credit if you give them the current windows.
But I think you are overthinking it, I would just leave them alone. What if there's some problem, and while it can be done, it does require removing the door panel, disconnecting the wires, etc.
On a 2000 year car I'm sure you will have many other repairs that I would put ahead of changing working windows. Those would be brake calipers, struts, body mounts, wheel bearings, muffler system, belts, AC leaks, changing All the fluids, steering rack, etc.

Leave it be and buy the one you want.
privacy glass is coveted to those without it.
Auto glass does not bolt in or push-in anymore.
Inside the doors, you need very small hands.
and some bandages.
used glass very often breaks, especially if urethaned into place.
ask a glass company to estimate one of each type, do the math.
return to the top of this paragraph.