In reply to matthew jones: Not so hot on the distances and steepness, although I can tell you to be thoughtfull about deepness of the rungs. At my local wall they have three depths. However the large is big that a full hand grip is the same as the small one, depsite them being of a different depth. I.e. the large holds do not need to be any more than three hand joints worth, and the the second should be two joints worth and the third, one joint or less.
hope that makes sense
