Splitting Balanced Cables?

Hi All

I’m about to add 2 subwoofers to my 2-channel system. I have a Schiit Freya+, a PS Audio power amp, and two powered subs that all can be fed a balanced signal. The main left and right speakers will be run from the high level (full range) outputs of the amp. I plan to add the subs in at the natural roll off point of the main left and right speakers. There are only 2 balanced outputs on the Freya, and I’d like to drive the amp and the 2 subs from the balanced line outs. Is there any problem with using an XLR splitter cable and run one signal to the amp and one signal to the sub on each side?

I’m not sure if the Freya can drive both, or if there are bad side effects in doing so. Also, I can only find inexpensive splitting cables on Amazon. Are there better options? Or is there a better way to do this whole thing in the first place? 
Thanks