As of right now, it's not compatible with any custom biter races, I'll definitely look into making it support more mods. My plans for this week will be to add multiplier support, add support for more mods, and clean up the mod a bit, I'll try to update the FAQ a bit more with what's currently available and how stuff works, and what my current plans are.
For your question about the wave size and their frequency, all of it is pretty customizable, if you look at the FAQ, you'll see a lot of the options that let you change how it chooses the number of enemies that will come with each wave. Currently, you can set any number of enemies to attack, but I wouldn't recommend any more than 5000.