Dow Jones Industrial Average - SP500

I am using micros to create long DJI  short SP500 spread. This is a swing trade.  Scaling in is welcome.

Exec Time	Spread	Side	Qty	Pos Effect	Symbol	Exp	Type	Price	Order Type	Spread
8/1/2019 13:25	FUTURE	BUY	1	TO OPEN	/MYMU19	19-Sep	FUTURE	27095	MKT	15025
8/1/2019 13:25	FUTURE	SELL	-1	TO OPEN	/MESU19	19-Sep	FUTURE	3010	MKT