In the middle of SJ Redux

So im in the middle of Strange Journey Redux, 31:30h in, in the middle of the Defeat the three demons quest where you meet the bosses you have defeated but they are stronger.

So far i have not used any guide nor the dlc sub apps that make the game easier, but im completely burned out of the game so i thought of adding the apps at least to make the game more bearable. How far am i from the end? I dont want to spoil myself looking for it if i can help it, but in the big boss from Eridanus the question changed my allegiance from Chaos to Neutral and i almost wanted to kill myself and break the 2DS when i saw i didnt have a savefile to go back and change my answer.