Question What should be the Desired Poly-count for my Models

I'm working on a 3D Multiplayer Tower Defense Game for Desktop and would like to Know what Poly-count I should aim for for the player characters and for the enemies, of which there's gonna be a lot on screen at a time, about 30-50 in later stages

I hope I'm asking this question in the right thread and I'm sorry if it's in the wrong place

 

Although old info from v5.5
https://docs.unity3d.com/550/Documentation/Manual/ModelingOptimizedCharacters.html
It can give you a rough idea.

You could make a few cubes with each its own poly count and spawn in a desired number of them, and watch the profiler in unity.