All the settings will print with eSun petg so should work out for you.
Try the base line settings in all the photos posted and set the flow ratio to 1.05 / nozzle @ 260c / bed 75c / Max flow 11.5 and turn flow calibration off.
The prime tower you can tweak the size like 40 width and the volumes like 10 might work better for you with petg and move it closer to your seam location and no easy way to tweak the tower speed at this time but I don’t even use tower with petg.
Print a cube 30x30x3mm to test out keep us updated.
Orca base line speed settings:
Prime Tower moved closer to the seam location - sample.
