I found a geometry chart for that bike and the 53 has an effective top tube length of 53.5.

On a good day, I'm 5'9" and ride bikes with a total reach of ~65cm, so usually my top tubes are 54 and I use 110mm stems. Any longer than that an I feel too stretched out. For reference, my cycling inseam is 31.75 inches.

Like gerv, I would be looking at that one.