Susan - that's really close to the kind of schedule that I follow when I'm really focused and training like I should. That's not unreasonable for an HIM in June and definitely your volumes will be higher with the Ultra stuff too. If I am training the way I want to be, this time of year I'd be putting in 10 to 15 hours per week.
Having said that, I coach a lot of people and set them up with a lot less volume depending on how prone they are to injury, fatigue, time constraints and how much base they have. You have lots of base so that shouldn't be an issue.
Could you get away with training less and still finish Pacific Crest? Absolutely. But if you have the time and your body can take it, you'll do better on that kind of a schedule.
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2007 Look Dura Ace
2010 Custom Tonic cross with discs, SRAM
2012 Moots YBB 2 x 10 Shimano XTR
2014 Soma B-Side SS