I highly doubt the series would end so quickly. There are many plot points which have to be explored and there is no way they are fitting in Part 2; unless Kishi wants Part 2 to get bloated in comparison to Part 1.
If Kishi wants to end the story in a rushed manner; he has to solve these plot points :-
1) What is Orochimaru's role ? It's pretty doubtful that he will change his mind so easily and not have a sinister agenda. If he has an agenda ; what is it ?
2) What will happen to Spiral Zetsu ? He is the only character left in the current scenario who can pose a threat to the lead characters. So, what is his true identity ?
3) Who was Kaguya's husband ? Considering Kaguya, Hagoromo and Hamura had great power and plot relevance; it's hard to believe that Kaguya's husband will have little relevance to the plot.
4) What happened to Hamura ? Why did he dissapear from the history of Shinobi ? He was Hagoromo's brother after all.
5) What was the purpose of the White Zetsu Army ? What did Kaguya intend to conquer with the army ?
6) What is the Shinju's Fruit ? Is it a source of power ? Or is it imprisoning the Devil ? The end result of Infinite Tskyumoni is the Ripening of the Shinju's fruit. What will happen when the Fruit ripens ?
If you have more; feel free to post them here.
If Kishi wants to end the story in a rushed manner; he has to solve these plot points :-
1) What is Orochimaru's role ? It's pretty doubtful that he will change his mind so easily and not have a sinister agenda. If he has an agenda ; what is it ?
2) What will happen to Spiral Zetsu ? He is the only character left in the current scenario who can pose a threat to the lead characters. So, what is his true identity ?
3) Who was Kaguya's husband ? Considering Kaguya, Hagoromo and Hamura had great power and plot relevance; it's hard to believe that Kaguya's husband will have little relevance to the plot.
4) What happened to Hamura ? Why did he dissapear from the history of Shinobi ? He was Hagoromo's brother after all.
5) What was the purpose of the White Zetsu Army ? What did Kaguya intend to conquer with the army ?
6) What is the Shinju's Fruit ? Is it a source of power ? Or is it imprisoning the Devil ? The end result of Infinite Tskyumoni is the Ripening of the Shinju's fruit. What will happen when the Fruit ripens ?
If you have more; feel free to post them here.