Took advantage of the pullback to buy some cheap insurance for my SPX BECS.
BTO 1 Contract SPY Jan 29th 385 Call for 1.10. Paying $110 now reduced my planned exit max risk from $1000 to $575, almost cutting it in half. Max profit now is $1715.
Come to think of it, since the new SPY call expires after my SPY butterfly, it is sort of an extra hedge for that position too.
New SPX P&L Diagram: