continuing with your response I'll just add a couple things
1, yes his only hangout (in the public build) is only the training, but the bad end only allows you to fight him or capture him if I remember correctly.
2, this is so far the only major choice for him. But there is more you can do, the first hunt is only the beginning because he says there was nothing there so he asks you to come back at night (any period where the forest background is darker/the night variant.) Then after that the rest of the werewolf storyline is unlocked and you have to do the questline for it.
3, not the normal werewolves only bernard and logan can be cured.
4, there is no ending timer in game, I have gotten too around 400 days of I remember correctly but someone else I think reached 1000.