I also really like the small standards and it sounds like I went through a very similar process in looking for a dog. I was intrigued by the moyen/kleins, but not happy with what I could find.
I feel incredibly fortunate to have found a beautiful small standard from health-tested parents who both had calm temperaments (that was another of my requirements). My girl Cammie's mom was about 20 or 21 inches, her dad was alot bigger--about 25 inches--and she was the smallest in the litter. As someone else said, I was advised that being the smallest in the litter does not necessarily mean that she would be a small adult. So I had no guarantees.
At 12 weeks, she was 10 pounds and 13 inches, quite a bit smaller than the standard that you saw. She is now 22 weeks and 21 pounds, 18 inches, so it looks like she will indeed be a small standard.
I've been following her progress using the following growth charts:
Found a great height and weight chart for puppies
Looks like she is right on track to be 35 to 40 pounds. So I am delighted.
I do wish that someone would breed small standards, but of course, standards smaller than about 22 inches are not going to be winning any championships. Would love to hear of anyone who is breeding small standards (not standard-mini crosses), as I will as some point be getting a second puppy.