nico,
not sure about dropped spindles, but the alignment angles to use to correct bump steer or toe change due to front suspension travel:
1 1/2 degrees positive caster and 1/4 degree positive camber -- it corrects the toe pattern to within an 1/8 inch total toe change
throughout the suspension travel.
consider a 90/10 drag shock using washers stacked on the underside of the inner fender to extend the length of the shock and remove the upper control arm bump stops to increase front suspension travel aiding in weight transfer.
if you are using calvert traction bars, use their split mono-leaf and not SS springs. make sure you have a 4 degree pinion angle, follow the instructions on pre-load, and remove your pinion snubber.