My pack was 50-60 pounds but held up well, better than I did. I packed a few changes of clothes, some sweaters, socks, a tarp, air mattress, sleeping bag, lint, toilet paper, two aluminum pots, headlamp, gaiters, leather gloves, water filter, hammock, rope, camera, tripod, hiking poles, 2 Liter camel back and 750 mL water bottle. On this hike, I only used the water, pot and ramen, hiking poles, camera, tripod, and hammock (for a rest at the top but didn't really need it).
I had a jacket that I strapped to the outside but never ended up using it. If I had to stay over night, I would have needed more food (ramen made me burp the whole way down) and I had just enough water (finished it when I reached the parking lot). I of course wou
ld need the sleeping bag and tarp but it was pretty soft, I question if I needed the air mattress. I had to stop probably 30 times on the way up to catch my breath and let my heart slow down, the way down was quick (er), I did it in 1 hr 45 min. The hike up was probably 4-5 hours. My feet seemed to hurt in the heels on the way up, my left foot went numb on the way down, still numb the next day. My shoulders really were tight from the descent and my neck ached from straining to see the trail. The headlamp was just fine, only paid 5 dollars for it and carried an extra set of batteries just in case. I finished the hike in pitch black night, but could see good enough to follow the trail, just didn't know how close I was to the end so it seemed to drag on.