I've done something similar in the middle of a cycle before when I had a bunch of random orals leftover. M1A, Winny, anadrol, lgd ect. All used pre workout.
So I might do m1a for 2 days, then Winny for 2 days then nothing, then lgd for 2 days then nothing and so on. Basically just picking whatever random oral I felt would best match that workout.
The results, idk? Good workouts, probably the same outcome if I had just used one of them pre workout only.
Any benifits came from the total weekly mg's of gear and a little extra pre workout boost.
I feel there is no point at all in doing this over traditional methods unless maybe you're in a position like I was where you had a bunch of random stuff left over and not enough of anything to use solo.
I think the only constant in that cycle was testosterone. Everything else was random