So the main wing zero lift line and the fuselage datum line is parallel is a good starting point for a tractor.
That gets my vote. Tractor power is a refreshing change in my shop after many pushers. I enjoy elevons on both wings and feel they are a MUST on the main wing for your style model. If you are concerned about yaw stability, just add a bit of heighth and extra area to the rear of the vertical stabs. If you find that more lift is needed for the main wing, a shim can always be added under the trailing edge but I feel strongly that it will not be needed. Your model should get into the air OK and then the fun starts with final balance and trim adjustments.