Looked at my suspension geometry this weekend and as I remembered, the tca is almost parallel with the steering rod (good thing):
Futhermore, for the camber to get more negative, the tca must become rectangular with the imaginary line through the top of the strut and the ball joint, right?
It seems I am still pretty good with the current angle, even when fully suspended inbound (this pic is taken with the wheel/tca-end supported, so in resting position):
My idea to use a ball joint extender will probably give more bump-steer since tca and steering rod won't be parallel anymore and isnt needed from a camber point of view, so I think I don't want to do that after all.
Next action will be to see what my 'scrub radius' actually is:
Haven't done this part (ran out of time), but will do as well