Jay wrote:

And yes the longer moment arm will increase the time
required for spin recovery, but it will also make it a more stable IFR
platform in pitch and yaw.

Whoa there. A longer nose moment arm will _decrease_
stability, not increase it. As for spin recovery, increasing
or decreasing depends on the weight of the engine and the
moment arm (or arm^2, technically).

Dave 'sluggo' Hyde