I feel like we should take our time with these guys. Let them get solid experience playing in the minors. Don't bring them up until you know they are ready, and then wait a year. This accomplishes a couple of things that are to the long term benefit of the ball team. First, when an individual player arrives in Chicago, he'll be polished and hungry. He should be able to step into the starting line up and be productive from the start. Second, this naturally makes the player much closer to his physical prime. If you let these guys mature in the minors, you will get them for 6 years, through their prime, before they are eligible for free agency. The will also not be arbitration eligible as soon, which will help keep payroll down. This, in turn, gives you financial flexibilty to acquire a key player or two along the way.
In fact, with the White Sox budget situation always being an issue, this should be Standard Operating Proceedure.