Quote from inomad:
I would close half the position (16 cars) and sell 20 Puts on ES @ 1210 in the premarket.
Save your skin.
Just my 2 cents.
In any case, I would NOT try to get it all back on this one trade (i.e. hold and hope or add to your risk). In the bigger picture, you probably need to take a serious hit here to help you avoid making the same mistake in the fuuture. Manage the loss - if that means taking half now, that's not a bad start, but I would not add any more risk to this trade.
Best of luck to you.