Producing cut/fill data

Hello, I’m a project engineer who recently got my drone license here in the states. My boss wants me to go to potential project sites to gather data for cut/fill information. I’ve been playing around with the PIX4matic and survey programs free trail. Seems like once I get the contour lines .dxf file, that’s all I’ll need to get to the architect. Anyone know if that’s the right route to go?