How Long does it last?

[AxMan]

I am new to the site and quite happy to come across it. I have just completed a new wine closet that will hold aprox. 300 bottles. I have about 100 (97 to be exact) at this time from Italy, France, Chile, SA, Cal., Spain.... I am curious on what the shelf life is for these wines? I certainly do not want to miss their prime. Is there a rule of thumb for cellar time for Zins, Cabs, Rioja, Chianti, ......?