It's extremley difficult to orient pinpoints of light. I suggest one of the better ideas would be to set white LED higher power "emmiters" in the sides of the fuselage so that they shine onto the wing panel undersides. Simarlly the same white LED emmiters be installed somewhere on the wings to shine onto the fuselage.
Otherwise you're trying to pilot a bunch of pinpoints that will work to blind your night vision so that you don't see the model at all, just the light sources. At that point orienting your perspective will be a tough job.
I'd also suggest that you use coloured LED's on the wing tips, nose and tail for identification purposes. Red for the right, green for the left blinking red on the tail and maybe blue or white on the nose as a landing light...
I'd still suggest that you need lights that shine onto the structure in addtion to the tip lights though. Or a buddy that runs the search light to keep the model pinned in the beam the whole time.