Really, Ro, trees have bugs, they cann't cuttable and we can walk in them, but my solution, is use a pw trees, a small number do not have problem and beautifull, but we can do for get wood, where is the list, if I had tested.
pw_tree_2a average
pw_tree_2b average
pw_tree_8a low
pw_tree_8b low
pw_tree_8c low
pw_tree_a1 good
pw_tree_a2 good
pw_tree_b1 good
pw_tree_b2 good
pw_tree_c1 low
pw_tree_c2 low
pw_tree_e1 low
pw_tree_e2 low
pw_tree_e3 low
pw_tree_palm_a good
pw_tree_plane_b low
pw_tree_plane_c low
pw_tree_plane_d low
pw_tree_snowy_a good
pw_tree_tall_a good
About wheat, I do not have problems. And armors, I will try, but I look a list of crafting in this fórum, try that.