Last push as TH9 ?
I read somewhere the middle DE point for Hero to 40 is about level 28-29. You are no where near last push yet

Each hero about 4M (AQ slightly more expensive)
Halfway at 2M DE, about level 28-29.
On a lighter note, just keep grinding or rely on maxed DE drills. Although the upgrade is small, during war or at those moments, every tiny bit of health or DPS counts.
Motivation ? If my mini-TH10 can farm from drills and upgrade to AQ20/BK20, I'm sure you can do better than that. Go go go !!! BTW, the AQ is upgrading to 21
