I wouldn't be to freaked out at some of the noises that you will hear at night. The last time I went out, I heard something getting chased by what sounded like cayotes. They werent barking like dogs but yapping. The pray they were after made screaming noises and in a few minutes it was all over. I guestimate it was a hundred yards ffrom where I was camped and about 3am. I just went back to sleep.
If your easily freaked out by unfamilier sounds you might consider taking along a friend the first couple of trips.