[Callers] Best number of dancers for this set dance needed

Hi All, I have a set dance that currently is simply named "Shetland Set" in my collection. I am trying to figure out the best number of dancers for it. If you also have a name for it - fantastic, but the best number of dancers is my most pressing problem. The dance is below. Thanks, Rickey Holt, Fremont, NH SHETLAND SET Probably proper A1 Top couple arch down over the gent's line (lady in the center) / and up over the lady's line (gent in the center), back to place A2 Same top couple sashay to the bottom / and reel back up B1, 2 "Shuttle" to the bottom: one-half pousette (first man push to start), the top couple exchanging places with each subsequent couple, all couples except top couple can move together in the same direction as the top couple weaves to the bottom. My notes do not indicate this but I believe that it is common for each couple to swing their partner after the top couple passes them. If so end that swing proper. Seems to me that the reel would take more than part of the A2, and the "Shuttle" less than B1 and B2 combined. Do you recognize this dance?