If you have no plans, you have to start somewhere. There are 3 things you're trying to line up - correct? That would be thrust, wing incidence and stab. incidence. What you really want to know is how these 3 things relate to each other not necessarily where they relate to some line on the fuselage. OK, I know, if you DO have a reference line you can align everything to that but I'm assuming in this case we don't. So what do you do? Simple. Pick one of the 3 and measure the 2 other items in reference to that. Make sense? If you have a non-adjustable stab. you can use the stab. as the datum. First, put your incidence meter on the stab. and zero it out. Now put it on the wing. Record the number for future reference. You have just measured the wing - stab. decalage. Finally, put the meter on the thrust washer and measure the thrust angle. This should tell you all you need to know. Even if you have an adjustable stab. this method works. you can paly with the stab. to get your thrust line whwere you want it and THEN adjust the wing to get the wing incidence where you want it.
In some cases, I have started with the thrust angle. I do this when I know exactly what the thrust angle is supposed to be. I set my incidence meter to read the correct (known) thrust angle on the thrust washer, then proceed to the wings and stab. Like I said, what you're concerned about is how these 3 things relate to one another.
Hope this helps, or at least gets you going in the right direction.

John Pavlick
Team Black Magic, Tech-Aero Designs