Bike measurements are in centimeters. 52 inches would be huge.

From what I understand, there is nothing unusual about the SE Draft's geometry, aside from it being relatively relaxed. However, if you're between 5'9" and 5'10", it's likely that it is too small.

The important thing about leader frames is that the top tubes are pretty long. This means that it may be wiser to size down rather than up, though you should definitely check the geo chart.