Chances are I used Microsoft ICE (Windows only - Free) on that one, since there was lots of ideal detail for the stitching to work well.
Heights - that very much depends on the subject (I’ve even done one in my garden at 6ft.) … and if I’m aiming to do a Tiny Planet.
TPs often look more interesting if items project above the height of the drone … tall chimneys and the like. (Not mine)