So I figured out that you can make a Release version by, in Unity, going to Assets / Wwise / Activate Plugins / Release
The Release build doesn't show these errors but, then again, I can't profile it so I think it's just because the monitoring is disabled for Release.
Anyway I'd still like to increase the size of the Monitor pool because I'm trying to debug *another* issue and this Monitor pool maxing out is getting in the way. Also, I'd like to develop in Profile (as opposed to Release mode) so I can catch further errors and it sucks that my Unity log is flooded with these Monitor errors in Profile mode. Please help!