cardio causing catabolism when on juice?

I'm doing a bulker right now of 75mg prop ED (525/wk) and 50mg eq ED (350/wk). However my body fat percentage is a little higher than I'd like, and I don't really want to wait until the end of my cycle to shed it. If I do cardio in the AM on an empty stomach (except I take glutamine before I run), then eat immediately afterwards, will I be decreasing what I can gain in the gym? My calories are over 5000 a day, and all lean meals.

Catabolisim is basically a non issue whenever cycling.

As long as you are taking in enough calories, you will be fine. I always do cardio while on cycle and have never had a problem gaining good weight.

steroids are anticatabolic. they should help if anything with this. like velvetlion said..just keep those calories up if you are bulking and dont want to hinder gains.