Building a slow flying camera plane to take aerial pictures. Here is what I have so far?

Plane Specs:

90" Span
1123 square inches (a Cub wing)
10 pounds flying weight (or less, estimated)
intended for slow flying camera plane (basic trainer performance envelope), no aerobatics.


Motor:
option 1: AXI 4120-14 external rotor brushless motor

option 2: AXI 4120-18 external rotor brushless motor


Controller: JEC703OP Jeti 70-3P Opto Controller


Battery Option 1:
14 cells - 2 x 7 Cell CP-2400SCR NiCad pack (Sanyo)

Battery Option 2:
16 cells - 16 Cell 3000 mAh NiMh (Sanyo)


All options above have already been purchased (plus spare batteries and chargers $$$). I would like to use Option 1: motor + Option 1: battery - together on this plane.

I would like to build a 2nd plane for the Option 2: motor + battery, but could combine in different arrangements to suit flight regime:

Take off, fly no higher than 500 AGL, and have about 10 minute flight times. I hope to fly at 1/2 throttle or less to maintain altitude for photography.

Is this setup going to work? or do I go back to the drawing board (and credit card)?

Thanks!