Nope, I wouldn’t risk it and 1200 ppm seems right.
I switched to Jack’s for this grow and I’m running EC 2.4 (about 1200 ppm) in late harvest with great results so far.
OG x GG4 RIL @Floyd
If you are thinking of a switch to Auto Fems, take a look at what @BU2B accomplished with @Nagel420’s Black Cream! Mondo yield with minimal training in your flavor of hydro!