There's too much time to use here, I can install 4 plots easily or switch 6 if they are close to store. Been "practicing" with C64 emu as a humanoid, can install only 2 and switch max 3 even when optimally located, maybe add one plot for "normal" species.
And if I want to release mule, I think I could max 7 here, way too much (but doesn't mean I don't use it since it's there

So the developers may want to adjust this. BTW, just remembered an auction "bug", maybe better start a new thread...