By the way, this template is perfect for 2v2 games. I haven't played it myself, but I think it would be interesting.
Almost forgot. In my opinion, this template is better played with Haven + Academy, because there are a lot of blocks in the trenches. It seems that there aren't enough underground passages for this template.
The presence of an underground passage limits the choice of castles, because starting in the dungeon in 90% of cases leads to a loss!
And also. On this template, a lot of real time is spent on each turn, and 4 minutes is very little, especially when there are 8 heroes on the first day. Therefore, I suggest reducing the resource expenditure on turn 113 (you can make 2 resource expenditures on turn 111). It's a shame to play for three days and then lose because of resources... This is a lot of time wasted for nothing :(
I suggest playing with 6 minutes per turn, but with resource expenditure only on turn 111!