I have hiked Observation Point and Angels Landing. I'm guessing you're concerned about the exposure on the Whitney Main Trail. I too was nervous about this but in my experience it wasn't a factor. I was able to enjoy all the views from the switchbacks and the windows. My joints, muscles, and toes were severely stressed after my Whitney hike. I advise preloading your body with 400 mg Ibuprofen twice a day starting two days before your hike. That worked great for me on my recent Half Dome hike.
