Actually foutsjoe, so long as the air is moving under the wing, then the pressure will be less than atmospheric (static). The wing only reacts to pressure difference between top and bottom. If the wing is still, then the maximum pressure under the wing can only be local static pressure. The object here is to produce enough pressure difference between top and bottom (lift) to raise the whole machine. The problem then is, with no airflow over the control surfaces, how the heck do you control the attitude of the thing? The old 'raised by its own bootlaces' thing.
Evan, WB #12.