Great job, 80 minutes of quality intense workout will build up that conditioning for sure. The power hike and run on those hills is a lot of work, and the descent I've always found the hardest. Also not to fall down the hill in the process! Sounds like a great plan to increase to three times a week soon, it will have you in tip top shape in time for the real deal!
Some great shots today, you must have gone out bright and early today!
!BBH
!PIZZA
!PIMP