Arc most likely is not ending next chapter 
I definitely expect huge bounties the party and Yamato asking luffy to join only for it to be a cliffhanger 
I'd give the arc up to 1060 at the most honestly 
Especially with the week timeskip 
We're most likely at the end 
Also if it did end next chapter I wouldn't be shocked just because how vibes been for awhile idk 
I'd say if ur still hoping for more drama and conflict in this arc 
I would be very cautious with those expectations 
I expect green bull to be antagonistic but he is entering a no win situation so it'll probably get solved in an alternative fashion 
One piece is not really a subversive  series 
If something feels obvious then it's probably true 
Also oda has never baited this hard on a twist 
The longest wait for a twist was three chapters for aces death and that event didnt reset the arc 
Where as big mom and kaido getting up does 
At the end of the day one piece Is about optimism and hope 
And if u wanna hope for more 
All the power to you 
I just think its healthy to be realistic