There’s some good stats in the following post about translating qualifier times into LT100 times.
The multiplier for wilmington is 1.93, which puts you at about 10:30 for Leadville. Based on this finishing time, you can determine splits for Leadville based on other 10:30 finishers. That will help with pacing, in addition to your power meter - although remember to adjust for altitude when using power to pace.