Constantinople seems like the more reasonable decision.
Ooh, this coudl be likely. Could we perhaps see an abolition of the Janissary Corps and a proper modernization of the Ottoman armies 25 years early? How might that play not, and not just for Frankish Bonaparte commanding them, but I mean for Turkish military history for the rest of the century in their numerous wars against Russia, and also their attempts to put down various Balkan revolts?