Being from California, I am partial to some of the wonderful vistas we have here. June is tough though as we usually do not have much rain after April and a lot of the great waterfalls are somewhat diminished. Travel time is also a consideration as you didn't have much time to spend and really if you are on the road all the time it is challenging to plot the best spots during the right time of the day. Next time you think you may want to photograph Northern California let me know as there are some awesome places, waterfalls and moss to your desires.
That said have a wonderful trip and look forward to seeing some great photos!
Best.