Thanks for your kind words. I like your use of lightweight wire shelving - I never thought of that and I never saw readily available examples in the DIY stores.. I went the full shelving route which was quite costly. I was also lucky to have a dedicated hobby room (negotiated with domestic management...). I also had in mind the (eventual) sale of the house and the shelving can also be used for someone running a small home business like book keeping or tax consulting.
My eternal problem is how high can one stack boxes? The model manufacturers vary so much in terms of the strength of their boxes. Some manufacturers, like Hasegawa and Trumpeter,will make the base box of corrugated cardboard which is a good solid support. Others, like Revell, use really flimsy thin cardboard which buckles under one box, never mind a stack of them. Of course, the other problem is the size of the box. The ideal stack is when the eight of the boxes is carried through the walls and corners. Varying box sizes mean that some box lids have to carry the weight of the boxes is carried through the walls and corners. Varying box sizes mean that some box lids have to carry the weight, instead of through the corners. That causes damage ot he boxes and even in some cases can damage content.
I suppose if I hurry up and build everything, there won't be a problem with stacking......