No, you are the one conveying that. You can't just split the west side and make the children's rooms bigger; the staircase on the plan-right is the boundary. That's why you lay one across the entire west side. Since I currently don't have Wi-Fi, I can't see the measurements. Yes, I remember you wanted to build 7 meters wide and a bit shorter for that? Then there's not much room for maneuver. Uh, 10 meters in length... okay. The other one can be placed with the long side on the south side. The bathroom stays. You want them bigger. You want them similar/the same. But now you can't just simply enlarge every room to 15 sqm with that measurement. Either you end up with 2 rooms with leftover space or you work with a diagonal wall. Possibly, you can still create 2 American wardrobes for both in an interlocking way, but a third room won't come out of it.