Alignment question

4 or 5 hours for an alignment?!

It shouldn't take more than an hour, especially on a rack. Even with my home set up I can do the whole thing in an hour or so, and that includes double checking my set up a couple times because I have to move my caster/camber gauge from one wheel to the other.

The only exception I would say to that is if you actually have adjustable UCA's and are setting them up the first time. The much larger range of adjustment and multiple adjustment locations (the arms and the camber bolts) mean it can take a lot longer. But if the ride height is set and you're just using the camber bolts you should be able to go through the whole range of adjustments in an hour or so. Especially if you work at an alignment shop, and especially if it's on a modern alignment rack!