I need your help (Last wasted chapter, I promise)

So, I think I have a way that this book could end, and I am most likely going to use it.

Jokara declares war on all heroes, and whatever the outcome is, that's the end of the book.

Obviously, this won't happen in like, 6 chapters. It'll more likely be 14 or something.

Would you guys be okay with me using this as the basis for an ending? I really want to start the next books, since this book was more for me to get better at writing.

If the ending sucks, I might remake this whole book eventually. I just first want to get your thoughts.

Also, I promise that this is the last time I waste a chapter. From now on, all questions will be in actual chapters.