It's a decent little drone. I have no idea what the wind is like around the Grand Canyon, but I prob would have opted for one of their larger models. That Mini will get pushed around pretty easy. The larger models generally have better quality cameras on them too.
On the other hand, I think...
I've got the 20V a couple of years ago in a package deal with weedeater. I've been extremely happy with the performance for the size. I would have liked to have the bigger one, but couldnt justify the price for the amount of use it would get.