Agreed on all points. Caster will certainly cause a pull if the split is large enough, cross-camber can also cause a pull, but not as strongly, and toe, because it's self-centering, will not cause a pull, but can cause dodgy behaviour. If you're carving corners on a regular basis, you're going to want around 1/8" toe-out, if not, around 1/16" toe-in will be the most stable, and cause the least wear. For a road-bound car, I would consider -1.2* camber to be the absolute max, and I would want the differential kept to under 0.2*. Please note that the factory does NOT allow for any adjustments other than toe, however, without slotting the struts or running camber plates or bolts, there is a little wiggle room there. Loosen the strut-to-knuckle bolts, and shove the strut around a bit and you can pick up a touch here and there, ditto with the four nuts on the strut bearing up top. Do that first, then set the toe.