The first to set up is the upper trailing arm length. You need to have the long bolt in the spindle to be parallel to the inner mounting holes for the lateral and toe links. You can put a 14mm rod through R upper mounting holes and then put your angle finder on the rod and write the the degrees. Bolt up the lateral and toe links and slide the rod through the links and spindle, set the angle finder on the rod and match the angles. Then set the camber with the upper camber link. Set toe in and thrust angle.
I use this for caster/camber
this to corner weight
and these to make my life easier