Yes, I was thinking about that too, that’ll work!
In the meanwhile I was thinking about something else (sorry!)
What if you’d have 2x stereo instead of 2x red and 2x white. In that case you’d have stereo in the back and in the front. For that you’d need some sort of stereo duplicator, so one 2.5 plug (stereo) to two 2.5 sockets (both stereo). Do you know if such a thing exists?