I'll report update in 5 more hours when my IT completes, but in case anyone was wondering, I booked one of my ADs to max from the recent clan games. I saw no change in my defensive weight with the AD leveled up.
On a side note, if anyone was wondering, the number 1 in war on the opposing side has everything maxed and 38 level 13 walls completed and has the same weight as my clan mate. It leads me to believe that all the weight for TH12 is in the TH, Eagle, ITs and new HT. Perhaps some in the Xbows?
I have 4 builders currently working, but after those complete I only have 3 ADs, 6 cannon towers and 7 archer towers left and I will be done with defenses so I can solely work on walls. I'm thinking roughly around end of November (unless we get more book of building from events or games).