I am currently designing an electrically powered RC plane with one propeller. The wingspan is c. 2.5 m and the length c. 1.6 m.
Right now the plan is to put the propeller at the top of the VS where the HS is also situated. However, as I've advanced further with my design, it has become clear that it is hard in all possible ways, starting from the structural traits (foam covered with fibreglass) to fitting the 40 mm engine along with the elevator servos.
So, should I just move the propeller + engine down to the aft of the fuselage or is there something about the performance that this move might adversely affect?
E: As mentioned in the comments, moving the motor would affect the pitching moment characteristics of the A/C. "Luckily" I have the option of changing the battery placement within the fuselage to counter this effect so the pitching moment consideration is made void by this.