So the front of the turbine would at positive attitude relative to the thrust line of the model?
Creating the desirable negative thrust angle for the turbine or fan unit.
ORI
3.) The engine is mounted with 3,5 deg down attitude in relation to the fuselage reference line. This is unneccessary in the models, however a slight down-thrust comes in automatically because of the low nozzle position.
6.) the F-4s i've seen all had negative AOA and rotated smooth. Do it up according to pics and scale documentation just like the real thing and you'll be fine