That'll do just fine. I tend to put on three coats. First one goes on with the spray can sweeping along parallel with the length of the stave. Second one angles 45 degrees to the stave with short strokes. The third is again at 45 degrees to the stave, but now perpendicular to the second coat.
I know, I know, sounds like overkill, but when I started this (and even now) I was in a bow wood desert and the loss of even a single stave was devastating. I developed this technique after a stave developed a lot of checks where my tightwad cheap instincts tried to save on a $8 can of poly.