1. About your area, go into the client and activate entity hover-on. Move the cursor of your mouse to a tile, you will get 2 coordinates (1831, 1839) (x,y)
Do this one more time so you've got the coordinates of 2 tiles (2 corners so you have a square). if your second coordinate would be (0181, 4810) your area would then become --> AREA_TREES = new Area(1831, 1839, 0181, 4810)
2. About dropping the logs; take a look into the API. http://osbot.org/api/org/osbot/rs07/api/Inventory.html
If you want it to perform the drop action if your inventory is full, it should be this -->
if (inventory.isFull())
not this --> if (!inventory.isFull())
the ! "means" "not". in this case that would be --> if inventory is not full
So what you'd have to do -->
if (inventory.isFull())
inventory.dropAllExcept("Bronze Axe, Iron axe"); //etc
If you just want to drop everything in your inventory -->
if (inventory.isFull())
inventory.dropAll();