Some of us, myself including, think this buy was thoughtfully planned out.
The different row and size of keys is intended to give you the most flexibility in layout. This is desirable because it allows this set to be used with many different keyboards. This set is future proof if you will... Allowing you to use it for any keyboard you'll own in the foreseeable future.
With 75-100 orders coming and the number already over 125 it's actually very likely this buy will meet MOQ. So when you say impossible... I just don't see that.
Edit: you said 400 orders.. Ok yeah that might be a bit much to meet at this point. But 250 is very close