Kamiliu.. - I know that is a solution, but the thing is i would have to edit each one of the objects then. I am also, from before, very close to the sa-mp limit for CreateObject and RemoveBuildingForPlayer.
Define "close to the samp limits", I've got atleast over 7700 objects streaming in mine. My advice is make the floors spawn first before the rest of the mapping, and keep the cars spawning at a slightly higher thing.