Can't identify this LEGO set with large angled brown plates
I think you have some of the parts for Jabba's Sail Barge #75020

It is one of the few sets to have so many of the Hinge Plate 2 x 4 with Pin Hole and 3 Holes in light bluish gray, you show 7.  It also has the  12 x 3 Wedge Plates in reddish brown, as well as the reddish brown 2 x 3 Tile with 2 Clips, and reddish brown 2 x 14 plates.