Unless 2 of the following in Harvey; Wheeler, and Mejia pan out by 2014, along w/ Gee bouncing back to a 4.20 ERA pitcher, we're 2 maybe 3 years away(assuming we don't get two outfielders in 2014). Unless Duda and Kirk become 3 WAR players or we get two outfielders next year, we're a few years away.
I don't think we need to rely on Kirk and Duda becoming anything. By 2014 we'll have money to spend on free agents, and the developing talent to open the window allowing Sandy to spend on multi-year contracts. No reason to assume we're going to rely on only the guys we have now.