Camber -0.5 degrees
Caster as much positive (to the rear of the car) as you can get.
Usually that means that the frontmost cambolt-adjusters are turned outwards and the rear cambolts are turned inwards.
Then, re-adjust for 'eyeball'-camber setting.

For a trip to the alignment-shop you can pretty much eyeball that the wheels are straight up, with maybe a very slight lean backwards, towards the centerline of the car.
Toe-in can be set with a tape-measure to the inside of the wheels or tires.

As would happen, I just downloaded (another) alignment app today for my iPhone called, 'CamberMeas'.
This app has the nice feature that you can enter your car's steeringbox ratio, and, per wheel, just turn the steeringwheel 360 degrees to the left, measure, then turn 360 right, measure again to get your caster-settings.

I still would like to realign the car in a regular alignmentshop to verify the app's numbers.