The truth is that anything will work... Some footware just requires you to think a bit more about where you plant your feet. Grandma Gatewood did the trail in Keds, etc. It is all about what works for you. The trail through the 100 Mile Wilderness can be extremely wet. How do those shoes perform on wet rocks, heading down (or up) a hill?
If you feel confident in them, and they are all that you have, then go for it. Others have done the trail in lesser shoes. Others have done the trail in shoes that were superior. The point is that each of them completed the trail. I could say that I would prefer a shoe with a bit more traction...and that is usually the case when I am hiking the trail. However, I have also done that section of trail in Keen sandals. It just means being more alert about where you put your feet.