Please critique my home front-end alignment method

You can also swap the two front tires to narrow down a radial tire pull. If you drive it after your alignment and it does not pull and it feels stable and doesn't wander, I would call it good. There's really no need to measure caster in that instance, other than just to know where it is. If it drives good, you did good. I measure static caster at the spindle. It works for me.