All you have know is the type of forest. If its deciduous, than Multicam. Based on the photos, I would recommend multi cam.
Im not a MC user because i thought it looked cool, but rather because i was walking with a team who were wearing it and when i casually looked over, i couldn't see them; i had to refocus just to spot their outline against the treeline. And were were only 5-10m apart from one another.
Multicam is the way to go.