I had heard through the grapevine the 300 aircraft thing and it made sense to me. I don't have access to the big boy board anymore so I have no first hand knowledge of who said what.
I suspect no one knows what size NJA will be 10 yrs from now. The company may have an idea, but I'm sure the plan is flexible based on the economy. The recent purchase agreements have a lot of options for aircraft so it seems if the demand is there, the company will exercise them. I assume they will grow as long as there are buyers for the planes. I haven't heard much regarding sales recently.