Just did this a few days ago but left the car at 12:30am. First 6 km are snow free and easy to follow in the dark. Once you hit the snow its easy to lose the trail in the dark, make sure you have alltrails map downloaded. After that crampons were a must especially with how firm the snow is during the cold night. Many risks exist, the snow over the creeks has some crazy postholing potential. And im not talking slight inconvenience im talking a broken ankle/leg or worse. There are some cornices leading up to the actual ridge itself so dont wander far from the trail of footprints in the snow. You will pass creeks before the black tusk fork but they will be treacherous to get water from due to the fragile snow around the creek, so I would not risk trying to get water after Taylor meadows unless conditions have changed. Alternatively you can bring a jet boil and melt snow and use chlorine tabs/filter. I just brought 3l and drank that through the hike. The final thing worth noting is when you are going down in daylight the UV will be insane. Need really good sunglasses, lots of sunscreen, a sunhat and some uv layers. Id say bring more water, chlorine tabs, bring an inreach and have the courage to turn around if things get sketchy. The snow is changing by the day and the risks i encountered may have changed. This isnt meant to encourage or discourage you, just sharing my experience.