All my walls are not the same level so should I put the weaker ones on the outer layer or inner layer? 1 lvl 5 WB can get through my weaker walls (lvl 4 walls) but my current strongest wall is lvl 6. So should I try to slow the enemy in the beginning or toward the end of the attack? I'm TH8 and just need to upgrade 1 air defense one more time and 2 teslas, one twice and one three times (they cost SO much). Other than that all defenses are fully upgraded.

