As for a M1k as the first stitch? The only way I know to make a new stitch at the beginning of a row is with a backward loop cast on, but that doesn't seem reasonable giving what you are working on. Or as Suzeeq said, use a stitch adjacent at the shoulder to M1......Where's Ingrid?
Oh yes and the mfb make one front and back. Edited to remove my confusion about the number of stitches... doh, must not have been awake.