I've got no cash but can offer you some Minecraft diamonds and emerals
I didn't add the stairs as in doing the blueprints I had a few thoughts about it but wanted to check the 'basic' design was down before going any further.
The main thing I thought was that the two wing squares could be bigger to fill the area as long as there is the gap up in the middle. So Wing 4 can move down, W1 moves left and W2 up so the outside walls sit on top of the ground floor walls. Though obviously it will have to be the wing square that scales up in size rather than moving the individual wings. This would also give us a bigger atrium so plenty of room to fit the stairs in. The problem with this though is what do we do about W4 and W8 as the 'outside' wall would then be against C1 and C2 unless we make C1 and C2 ground floor only.
But then if we make C1 and C2 ground floor only what do we do about the roof? If it is an apex roof that would still block W4 and W8, if it is flat then does it become a big balcony area for those two wings? If we make it a balcony area could give access to them from somewhere else like the stairs in the entrance?
Though on a side note, it just occurred to me that trying to picture a 3d object from 2d blueprints isn't easy and if we remove all the fancy things like the castleated walls, gables etc. then it is really just boxes so would be quick to create a 3d model.
Dave was suggesting we remove those corridors and move the wings to the outer walls as it would mean that the wings then have an outside wall so everyones wing can have windows in rather looking in to a corridor.