[Hugo]

Agree with everything but the high ISO.

In a night photography course I took the instructor actually had us keep the ISO as low as possible, since we were using tripods anyway. It was felt avoiding the additional noise was more important to the quality of the photo. It seemed to work out pretty well, there were a lot of good photos taken with little noise in them. It seemed that the additional time needed at low ISO to capture images didn't add noise like a high ISO would have. The tripod will definitely let you test out different options. And use the self-timer.

You may want to take a flashlight(s) with you into the forest, in order to light up the scene a little bit while you're taking the shots. A guy in the course with me, takes photos at night in abandoned buildings and he brings in light sources for interesting effects and to light the scene, not to full day light or anything like that, but to add to the near dark scene.