As for the CEX/OTC issue, i don't plan to sell much on the way up, at least too little to qualify as serious OTC client, i guess.
On the other hand, my ladders are set up for medium term, with enough spare powder to shoot later. It's not that i would lose so much, but it would be hard having to watch the bubble burst with only market-sell opportunities that fail because of liquidity issues and/or CEX failure.
I will still keep most of my corn for the far future, like tens of years from now.