The Clarks are super solid hammocks and they sure seem rugged to me too. But, my experience with the Clarks left me with the feeling that they are better suited for smaller builds. The Clarks also tend to be on the heavier side of things. Part of the reason is their rugged construction, so it's kind of hard to fault them for that.
Hennessys are fine, but again, at your height you'd need to carry one of the larger HHs to get comfortable. I suspect it would be the Safari.
Blackbirds are almost always the winner in my book, so I'm a bit biased. However, they really are an excellent hammock. I think I saw somebody that was 6'5" reporting they were very comfortable in the hammock, so size shouldn't be an issue. They aren't overweight with features, but still have conveniences like the storage shelf and full length zipper. Get the double layer and you don't have to worry about bugs biting through the bottom of the hammock.
Whatever you decide, you must tell us more about your trip.
Welcome to the Forum!