I finally had time to look into this - in the slicer at least - and I think you’re right: one wall should solve the issue. I can tell just by how the slicer arranges things. I turned on ironing too for the topmost layer. That should make it even better.

I’ll go to the office to start the print today. It takes about 5 hours - and 20 more minutes just for the ironing of that one surface 🙂 I’ll let you know how it goes.

Thanks for the suggestion!