why the warning off the Bi plane .

I am also a novice ( hence the name) and have bought a GP super stearman.
I did this because I like the plane and don't have the space to have a full size one.
I wish to have it as an absolute replica and so want to do a rotary engine to gain the visual effect.
Does anyone know how many cylinders they had?

Also any other hints on assembly would be appreciated.

At the moment the aim is to build
after that I will learn to fly

Aussie Novice