I am sorry, I only told you to do it and didn't answer your "why" part of the question, well here goes.
Dunn is going to be good, but he isn't the next Babe Ruth either, he will be a top offensive player within a few years. Bobby Hill has a huge amount of potential too, and will be a top 3 second basemen in the league about the same time Dunn is one of the very top players. Lawrence's value is already three times what you would be paying him this year and he will only get better. Stewart is young and will be the closer this year, and maybe even the next couple depending on how he does. Byrd is going to be great player with 25-25 potential...he alone MAY have a better value then Dunn down the road. Finally, Daryl Ward, well he's won't give you much, but might be worth keeping at such a low price