Awesome project Lance.

IMHO, engine out performance isnt an issue unless BOTH engines are out. The crews had a difficult time responding in time and they were INSIDE the plane.
With a model, visual orientation would make it nearly impossible to even realize in time that this condition was occurring unless on takeoff or landing.

With respect to trim changes due to power settings, Im thinking that thrust becomes thrust at the point of exit, regardless of how far up the turbine is mounted, unlike a propjob which produces push very near the engine, unless of course, there is a shaft involved. assuming your turbines are mounted dead center of the vertical thrust line, I would also go with zero incidence mounting as Ianober has suggested, and expect to trim down at high power settings.

Good Luck and MORE POWER!

BELA