Rebuilding front suspension/steering

I've done two '74 B-body front ends but I'm going to rebuild the front of my '70 318 Dart for the first time.

I have a few UCA questions.

I see I can buy offset UCA bushings from Moog.
This is to increase caster?

I see how they will more or less put a twist on the UCA by moving the steering knuckle connecting point at the top ball joint back a bit to increase the caster but does this affect smoothness of travel over the entire front suspension? No binding?

What does this do to camber and ride height by moving that upper ball joint back which it seems would also move it inboard a slight bit?

I assume once you press them in, that's the increase you are going to live with as they aren't adjustable. My car is a daily driver.

Is there a down side caused by the offset with less material on the one side between the center insert and the outer sleeve?

Are they worth using?

When I search UCA bolts I see bolts with regular washers and also offset bolts with offset washers. Are the regular bolts and washers used for a stock set-up with traditional type hole-in-the-center bushings and the offset bolts used for the offset bushings?

Thanks