Why does Gatsby deliver so many goods and services to Nick's house in The Great Gatsby?

Gatsby knows that the only way to Daisy's heart is through money and objects. He begins his seduction at Nick's, and to do so effectively he must be sure that the stage is set. It would not so to go back to courting Daisy as a commoner. He was once at Nick's level financially and Daisy discarded him because of it. Now, he wants to prove to her that he has all that she desires and can give her all that she wants. He starts his seduction at Nick's, then brings her to his own home where he shows her all of his expensive things (think about the scene in the bedroom with the expensive shirts). Gatsby hopes that, by showing Daisy that he has more than even Tom has in terms of money and possessions, that Daisy will remember that she was once, supposedly, in love with him and will return to him.