This build has been tested with 5k main stat heroes. It is made to be as safe as possible especially when your tower boost goes down.

Build Note 1: I found having spider minions kept things stable. With higher stats, you obviously don't need them.
Build Note 2: The refelct beams are there to protect your towers and Tower Boost Monk from spiders. Getting webbed and not paying attention is the reason for most of my failed runs.

Waves 22-29 Note: I stop tower boost at mob count 1300 and then start the tower boost after cool down to handle the final Genie/Sharken rush.
Waves 30-35 Note: I stop tower boost at mob count 1900 and then start the tower boost after cool down to handle the final Genie/Sharken rush.
Wave Note: I used a tower boost monk, two Summoners with Apprentice and Huntress Guardians, and the builder Warden.

Hint 3: I put my builder Warden on a bench in this nook at hint 3. I placed a reflect beam here as well for added protection. My builder was able to make it through all waves without dying.
Hint 4: My Tower Boost Monk stood on the Warden towers and shot at hint 4.

Arrows
Blue = Cloud direction

Video
Maybe...