I’m a light weight body builder who has always done cardio first thing in the morning on an empty stomach. Did a 1/2 marathon last year and was very successful. Now going back to body building but I want to change my workouts. I would like to strength train 1st thing in the morning and do cardio later in the afternoon. Will I see the same success?
To eat or not to eat is a personal decision. I would suggest something light and easy to digest in the form of protein.
As for the order of exercising I don’t think it matters as long as your are not getting fatigued on either end, I would pay close attention to over training symptoms as well, make sure you get adequate rest.