Here are several pics of the Dend., 2 front view, one back. I labeled them so they should be self-explanatory. The entire plant is about 6 feet tall; the pics are just of the top of the relevant cane. When in bloom the spikes reach about another 4 feet, so this one's not for the typical windowsill.
Julie, a keiki that has just developed roots can take several years before it's mature enough to bloom, though with excellent conditions, you can cut that time in half--so figure, as you said, about two years.