I used towerboost and upgrader adept for wave 24/25, then I swapped my upgrader for warden. I also added 2 summoners each with 2 huntress guardian pets.
See the green arrow on the map for where I pointed my towerbooster. The buff would go on cooldown around 1.7k - 2.k enemies killed, it was never really a problem and I'd turn it back on after the cooldown was over.
This is definitely not optimal, but it worked for me with about 6k stats.