I would increase wing area to at least 180 sq. in.

Use a brushless motor to start with. Brushed mototrs in ducted fans usaually don't last more than a few flights.
I recommend a Model Motors "Mini AC" 1215/12 12 or a MPJet AC 25/25-26 Mk. 2

Don't even consider Ni-cad or Ni-Mh batteries. Use only Li-Po's. a Thunder Power 3 Cell 1320 Mah battery will be perfect.

Keep us posted on your progress!
Doug