In the first post you said to bind off one, I'm sorry, I mis-typed
I would knit the first 15, place a marker. Then I'd knit the next two stitches.
I suspect that the next marker should be before the next 15, so I'd place the marker, then bind off the one stitch, and continue to the end.
This way everything will be balanced--15/marker/2/marker/15
Just for clarification, what are the instructions later in the pattern that involve the markers?