Should I take the middle level out? (Savic Suite Royal 95)

Hey everybody I need help with my cage Setup. So I’ll be adopting 4 boys in about 3 weeks. I’ve already bought the cage, a Savic Suite Royale 95 (comparable to a double critter nation) and it comes with a second middle level. The problem is that I live in Germany and apparently I’m supposed to add another two full levels in addition to the extra level that came with the cage. It just seems so wrong to do that. The German animal welfare Organisation priorities more floorspace and less climbing space. But I’ve seen many cages online from rat owners in the UK or US that take out the middle shelf completely to create a more active climbing layout.

Advice and Tips would be appreciated cause I just don’t know what to do…