Welcome to the forum Will.
First, for settings I would make sure you are using the ARM version of Blender
Second, I would make sure you have the GPU setting turned on in the preference pull down.
Not too much beyond that for performance; other settings are mainly personal preferences.
Fill free to join the M series Mac and Blender discussion over in the thread below. 
We discuss all things Mac and Blender with some other 3D DCCs Mac discussion.
Fell free to start at the top but the last 100 ish post will get you up to speed well enough.