The QA1 UCA’s aren’t crazy with their added geometry. I would start with the standard suggestion, front adjuster all the “out” and the rear adjuster all the way “in”, or make the front arm as long as possible and the rear arm as short as possible.
That setting maximizes positive caster. With the arms set like that, look at the angle on the wheels when they’re pointed straight ahead. Tipped in at the top of the wheels is negative camber, tipped out is positive camber. For an initial setting try to make sure they’re both close to vertical. Camber starts to become pretty obvious just looking at the wheels when you get to about 1° or beyond, so, if the wheels looks roughly vertical then the camber should be less than 1° and at that amount of camber the tire wearing component is just about non existent. I run -1° on the street and don’t have any crazy camber wear, and that’s over thousands of miles. And -1° is easily visible, the tires are noticeably tipped in at the tops.
The fastest tire wearing setting is toe, by a large margin. That’s the hard part, you’ll want like 1/16” toe in. You can roughly set that with a tape measure, but if you miss by more than an 1/8” an hour and a half drive could wear the tires.