After talking to vendors and crunching some more numbers, I'm pleased to announce that all kits will be made!
Latest numbers (include extras):
Base - 311
Usual - 86
Unusual - 72
Modern - 85
Sorry @dvorcol, but right after my post I got numbers in from Asia.
New latest numbers (with extras):
Base - 344
Usual - 95
Unusual - 75
Modern - 88