How to choose Rs for self-biased single FET class-B/C amplifier? Rs=-Vgs/Id

I can do calculations for any Q point above Id=0mA, but i am stuck with Q point laying on Id=0mA axis.
From datasheet, pinch of is about -1v. How i can determine voltage drop with Id=0?

If you connect the Gate to the ground-in AC meaning-( for instance an inductor) Vg=0 Vs=IdxRs(positive) so that Vgs=Vg-Vs=0-IdxRs=negative.
In order to bias your FET around pinchoff, you should select a Rs resistor which would give 1V with Id current.