DJI L2 Flight Settings for Closed Canopy Forest

Hi all, I've been asked to prepare for a 200 hectare flight over closed canopy broadleaved forest.

The client wants '0.1m' points, (I assume 100 points per sq m)

Just wondering what settings should be employed to get the best data possible please, which I will then downscale to the required. Theyre looking for forest structure so fallen trees and some maybe some indication of understory