Thiapalm - try signing up for the in stock product notifications. I had the same problem and gave up trying to order everything in one shot, so now I just use that as an excuse to order more parts!
The wife looked at me askance when I explained that to her, but so far so good
I got my cobbler break out, my pibow case (though I wish I had seen the blue one before I ordered, but the rainbow one isn't bad), and a few other odds and ends. I had to order them in three separate orders though since they probably won't be in stock at the same time since they fly off the shelves.
I say stick with your JIT/Agile process of manufacturing. Trends come and go and the last thing any of us want is for you guys to be bogged down with useless inventory. That will slow the whole process and make the experience less enjoyable for everyone. Lean is good! Just ask the Japanese who have been kicking our ass for over 40 years at lean manufacturing.