This is going to be fun!
I don't know diddly about reverse trike layout and geometry, so I'll need to ask some possibly dumb questions here. First one:
Won't having the motor that far out in front of the axle center line create funny handling dynamics? I understand that weight is needed on the front wheels, but thought it was always better to keep mass inside the axles.
That being said, the component layout you have there offers the opportunity for really sexy bodywork. It's just begging for a few bumps and curves in the right places! A bomber seat would be awesome. You should make up a mock one with some scrap materials or poster board.
That motor is made for this Woody! I hope the 1000kg limit has created a home for it here.