Could it be that Mr. Bennet is considering marrying off one of his daughters to mr. Bingley? I noticed this first time and was very surprized...

On first chapter Mrs. Bennet is telling Mr. Bennet that Netherfield Park is let at last. Following conversation happens just right after that:

Mr. Bennet: "What is his name?"
Mrs. Bennet: "Bingley."
Mr. Bennet: "Is he married or single?"
Mrs. Bennet: "Oh! single, my dear, to be sure! A single man of large fortune; four or five thousand a year. What a fine thing for our girls!"
Mr. Bennet: "How so? how can it affect them?"

At this point Mr. Bennet gets carried away with teasing Mrs. Bennet but at the beginning of next chapter we learn that Mr. Bennet was among the earliest of those who visited on Mr. Bingley. He of course won't say it directly but he looks at his favorite daughter Lizzy and speaks of Mr. Bingley:

Mr. Bennet was among the earliest of those who waited on Mr. Bingley. He had always intended to visit him, though to the last always assuring his wife that he should not go; and till the evening after the visit was paid she had no knowledge of it. It was then disclosed in the following manner: -- Observing his second daughter employed in trimming a hat, he suddenly addressed her with --
"I hope Mr. Bingley will like it, Lizzy."