This is a great base for farming lower in trophies. You can switch the AD with the WT but I rarely get attacked by air. Also if you get attacked by giants they are most likely to go around the base and not towards the middle. While they go around the outer they die very quickly because of the WT and Mortars and Xbows shooting at them. And the great thing is you have 18 extra walls to do whatever you want (I would just double up walls, that's what I did) Please give feedback. Thank you.