Those aerial roots will get your off to a great start. The bloom won't last long once it's open, maybe a day or so. Soon as it closes up you can cut it off.
I would put the new cutting in a separate pot, smallest you can manage .Get as many aerial roots as you can into the soil. Rooting hormone is good, Careful with watering till you see that they are getting established. Try to keep the humidity as high as possible and give bright light no sun.
The bottom piece will probably throw out a side shoot or 2 by spring.
