I am putting in a drop ceiling, which I didn't want to do. The holes for the rivet are terrible to drill. What tool am I missing their must be a better way.

Hey guys Im working on a drop ceiling estimate. The building is all metal, galvanized steel. 20' cathedral ceilings shaped like an egg or tunnel. The owner wants the ceiling to follow the radius of the buildings roof. Anyone install anything like this, if so where can I get the tracks that would...