well there are a couple issues to be addressed, first thing in the morning is when your natural test levels are the highest but since your on a cycle and your hpta is shut down anyway i don't think thats an issue. so..
1) working out before breakfast will make your body feed on reserve carbs, and fat rather than recently eaten food for energy and help u lean out...however
2) your glycogen will deplete quick and your body may actually start catabolizing muscle..
so it can be good or bad depending on your goals
personally, i like a little cardio first thing..eat, the train later