Theoretically, Jose is the eldest form of Aporia and was that form when he died, perhaps he may have had a Deck before he died that was then split up and given to the embodiments of despair... Why not think of yourself as the Jose of Aporia's life and not the embodiment, then there wouldnt be any problem with you using all 3 Meklord Emperor's
The reason I picked Ghost is not because he uses Ally of Justice and Wisel.. he uses whatever deck he is given and programmed to use... so I can use a Variety of pretty much whatever.. the Jose (Aporia) had no deck either before he died... so who knows what deck he truly had.... so you could pretty much use your imagination there
btw I spent 10 minutes typing out this whole speech