Should I upgrade my walls to level 8?
I have been playing Clash of Clans for awhile now. I am getting to the point of upgrading my town hall to level 9 but first should I upgrade my walls to level 8? I know I am upgrading it to level 7 at least. I am not sure about level 8. First because they are extreme expensive to upgrade. Second they will take at least few months to complete is it worth it to stay at town hall 8 to max my walls instead be at town hall 9 getting all the defensive buildings?
Here's my base layout
http://i.imgur.com/IQ71y5L.jpg