As per current situation (25-11-2019) I can't see that BJP can pass floor test successfully in assembly.
Since the time of posting the question, Ajit Pawar and Devendra Fadnavis have resigned and BJP made a public statement that they do not wish to indulge in horse-trading. I think this was BJP's actual goal. Their image was already tarnished in recent times due to economic mismanagement and scrapping of Article 370. Maharashtra was a lost cause and they tried to make the most of it. I think BJP played this drama only to get into people's good books knowing that this weakly cobbled government will not hold for long and the only way they would have a majority is if they won via reelection. That is why I think BJP performed this little musical. How long this government of opposing forces will hold is something only time will tell.