Thanks. That's helpful. I've been trolling past results trying to find folks then look up their flatland races on Athlinks.com to find runners doing about the same times as I do, but seems like most PP runners live in the mountains to begin with. I don't find too many folks who are directly comparable.
I've looked at the results and seen some real variability in the descent times -- typical trails stuff I guess: the folks who blow their legs on the climbs find out they don't have enough to roll the downhills very well.
Between your comments, digging for some results, and the calculator, I think I've got a reasonable target time/pace to shoot for. And I guess if I'm feeling strong near the top (Ha. ha ha ha) I can always pick up my deathmarch pace a little there.
I'm pretty sure that extra 2,900 feet of altitude over what I've experienced before is going to be the major question mark.
Now, to keep the calves and Achilles from blowing up with all the uphill slog training.