How high is too high?
The first step - be in onto a sunshelf or onto the first stair - how many inches is too high? Especially if you've got one arthritic, cranky knee?
If I want 8" of water on my shelf, that would make it a 13" drop from the top of the coping to the shelf. Too high?
Add a small step? Change the depth of the shelf to 6" thereby making that first step an 11" drop?