Your usual pace is similar to mine, and last year my average pace on the ascent was about 33 minutes per mile. Slowest pace was on the 99 switchbacks. Went too hard on my least favorite part of the trail (the switchbacks after Mirror Lake and the trail to trail camp), that is one of the steeper parts of the trail and it is a grind.
3:00 is a good start time but I prefer earlier.
