I'm partial to Playguns because you do usually get a little more size (15 hand range) and they tend to have speed. I just saw the post with your mare's papers though, and I see she is already bred similarly.

Smart Chic Olenas sometimes have a little more size, anyone know of any SCO bred studs siring barrel horses? I've seen some One Time Peptos with size as well.

I have had some very good luck breeding cutting bred mares to reining stallions. They place size and work well with the cowhorse build my mares have. If you are looking for a Junior Stallion I that would produce a foal that can go any direction and have great size and a perfect personality I would recommend Captian Barbossa who stands with Silver Spurs. He will put some size on the foals. I LOVE LOVE LOVE and so does everyone else who sees and interacts with my Barbossa baby. Here she is at 3 months I believe.