Just got back to civilization/work and I must agree that this is a really tough trail, but totally worth it. It's a jungle, but without even half the bugs and no snakes at all to worry about.

There is a short section called Crawler's Ledge that looks pretty scary, but only from one direction. On the way in, there is a turn in the trail where you can see only the ocean below in front and on your right side. And it's downhill. It does look scary, but the ledge is solid. Besides, nearly the whole trail is a ledge and the of falling off is nearly as perilous.

The only special gear I recommend is a hanky, to wipe sweat and sunscreen out of the eyes. At the last minute, I found a scrap of a microfiber towel I'd used for awhile when I tried the whole hanky thing for day-to-day and stuffed it into my pocket. I'm not at all used to that level of heat and humidity, this was a game-changer.