What is the maximum number of pages that InDesign CC can handle without choking?
That's like asking how may angels can dance on the head of a pin.
It will depend on the content and your system specs.
InDesign Secrets magazine has a whole (wonderful) issue devoted to long documents:
Aha! Peter, for me, it depends on the author?……… Oups! I fell asleep!
Retrieving data ...