Yeah, things are going to be a little weird right now on the public side of modding so apologies if some of the characters don't work for now until the next update.
Oh, okay, that does sound about right. The limit was around four even with my decent pc setup, so you are not that far off anyway. Good news is the next update has the new file system for mods that makes the game take up a little less memory than Discord normally does, even with a ton installed. So you should be able to handle things when that update becomes public.