I like you already, welcome aboard!
While i agree with your overall assessment of team needs and potential to reach the playoffs, i disagree with the idea that there's no correlation between a proven "ace" and recent postseason success.
Last 10 WS winners:
Red Sox: Schilling
White Sox: No "true" ace.
Cardinals: Carpenter.
Red Sox: Beckett
Phillies: Hamels
Yankees: CC
Giants: Lincecum
Cardinals: Carpenter/Wainwright
Giants: Bumgarner
Red Sox: No true ace
Giants: Bumgarner
*To qualify, "ace" is a pitcher in the top 20% statistically in the league.
You can't prove causation, but the correlation is there. The point is, it's certainly easier to win in the postseason with a top-echelon pitcher "getting hot" right around playoff time, although it's clearly not impossible to win the WS without one.