I’ve done a project using GoPro, Inspire drone cameras and Canon 1DS III for ground shots. If you have a big difference in image sizes you might want to downsample the ground shots during alignment, although I didn’t have too many problems. The drone pilot took plenty of oblique shots down low so alignments was generally pretty good. I added control points to align some of the components but probably should have tried an alignment pass that was just aligning components. Tried this with a different project and it worked well.