I think using duplication faces, instead array modifier, is faster for rendering. Just parent your table and chair to a simple square with one face. In edit mode duplicate that face, separated from your first square, in any position you want. And select Duplication >> Faces. Where did you get the floor texture?

DOWNLOADING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

can I get the all texture pack which you used in file? plz

nice

seems like a japanese class-room ^^ nice!! =)