With a 0-0-0 setup you're going to drag your tail in turns. If the plane isn't speed sensitive WRT pitch it's not a problem, but if you want it to look right in flight 1/2 degree of positive incidence will make the tail sit higher in all aspects of flight. I would expect you do have some speed sensitivity, as there is nothing in your setup to keep the plane from producing more lift as the speed increases. A bit of positive incidence together with the necessary down trim on your elevator will reduce that tendency since the down trim becomes more effective as speed increases, effectively raising the tail and lowering the lift the faster you go.