I would do motorized solar shades on the top windows . In fact I probably would not even motorize them at all . The do the othr window with drapes on both or non string roman shades for both

I love Solera Roman Shades from Hunter Douglas. I have them in all three of my kids rooms. They can be cordless, and they offer energy efficiency. The benefit is that the shape of the pleats will just pop back into position if they are fussed with. My older boys spent their young childhoods abusing the shades, and they still look beautiful. LOL. I don't think you have to do motorized–I would leave the high window shades closed. You have so many other lighting options from the other windows. And yes, I love the idea of adding curtains to the lower ones.

So, if you want to motorize, you will need a rechargeable battery option. These motors need a recharge every 6 to 9 months depending on usage. You would not need to replace the battery, just plug in a cord overnight and you are good to go for another few months. I would motorize the top windows with bottom-up motorized shades and use the same fabric but in bottom-up top-down operation for the lower windows. No pull strings nor cords across the glass are attached to this system and keeps your child out of harm's way.