Biff changed and does not want to stay where he used to live. He wants to go out west and work with the horses even if it isn't making him much money at all.
Hey Happy, you should move back with me out west so we can live for ourselves!
Happy would rather prefer that Biff got a job close to home and help out the family. Biff used be the ideal child and help out, but now he wants to do his own thing without thinking of who he could help instead.
I don't know Biff, but you should get a job here to help out the family.
Biff decides to stay at home and try to get into business to help out the family and Willy with his problems. Biff and Happy also talk about starting their own business of their own line of sporting good and sports teams to make a lot of money.
I guess I can stay here and get into business even though i'm not good at it.