I don't have this particular model so....

Biplanes can have either minor amounts of incidence or zero incidence on the wings.

Typically the upper wing has slightly less incidence than the lower one, though you may find BiPlanes where the reverse is true.

The variance may be 1 degree or less to help the plane's stall characterisitcs.

I have a 56" 1.20 Ultimate Biplane that is powered by an O.S. 1.20 FS III Pumped engine. While the performance is very scale like, if I had to do it over I would probably go with a larger engine, say a 1.80 or so for better vertical performance.

My plane has an AUW of about 11-12lbs.