Original question was about WING INCIDENCE
As the more informed have noted - the wing incidence -for flight -will NOT change beyond what is needed for desired lift. The rest of the model will simply change RELATIVE AOA (that's angle of attack) as the wing is positioned differently
You can't fool mother nature. To restate the obvious
if you raise the wing le position relative to effective trailing edge -position (add Pos incidence
for the same lift , the fuselage MUST assume a relatively higher tail attitude in flight-
correct alignment of wing-stab and engine are important -of course - but the wing does NOT change AOA unles weight of the model changes
Its just Basic Flight 101
depending on the model - you may want it to fly tail high or tail low . We once did a scale Zlin 50 for TOC - it finished flown by Dave Brown- in about 1976(?) second as I recall- pretty good flyer . not like the flying flounder setups but pretty good.