What's an efficient number of MLO interiors in one building?

I’m creating an apartment building that replaces a building downtown. The building is based on an IRL apartment building in LA. The question i have is, what’s an efficient amount of MLO’s to maintain performance?

So far i plan to have at least 12 MLO apartment units, 2 retail spaces in the bottom left portion of the building and the lobby in the bottom right. There’s an area i plan i make a hangout section with a pool etc. but its outside. I’ve seen other creators make 12 MLO units with a lobby but the additional 2 retail spaces kind of makes me worried that I’m pushing it performance wise. Any advice?