Hi Margee,
I'm not sure if this will help or not, but I have Adobe Standard at work and
I'm able to put several documents (I've never tried 1200 though) into a file
on my computer, then select all the documents, right click and select
"Combine into one PDF" (it's worded something like that - I'm not at my work
computer right now). Adobe does its magic and puts all of the documents into
one nice, neat PDF file. The only downside I've found with it is that it
sometimes puts the first few documents out of order, but you can easily drag
them back into the correct order.