No idea what head to get for that combine, but your comment about needing to do some headlands on the far end to turn around each time just doesn't seem right. 

I've been around 5000 corn fields and never seen it done that way. End rows get taken off and then you're left with the long rows and can turn freely on the ends since they're already gone. Trying to harvest corn across the rows and while turning is a recipe for corn left on the ground