I appreciate you providing links and quotes to such things. Honestly, in all my years of doing this, I've never personally run across a single soul that insisted (or implied) that ball pythons needed UV light. Personally, I'll go with what the Barkers say about the matter, as they have more education AND more experience in this field than anyone on THIS site or on any of the others you mentioned.

I simply can't help you with that screen lid. It looks cool. But you may have to keep looking for an alternative. The cages mentioned as ideas for you to consider can be rigged with UV and with a night bulb if you really wanted to. If not those exact cages, then others like them. Or you might consider creating a custom screen top that you build yourself. Some wood for frames...screen...hinges....maybe a little stain to make the wood pretty. It wouldn't be very costly at all....just take some careful thought and measuring to get it right.

Good luck.