One of the most important things for women and men on roids when dieting is something to block estrogen.
Diet does not work, you can't fool your body, T3 levels drop after just 24 hours of reducing your calories. Yes you loose weight, but most of it is muscle and water.
Steroids will help maintain muscle mass when coupled with weight training, but do very little to support T3 levels.
Therefore you have two options: 1. do aerobics two to three times per day to keep T3 levels up naturally or 2. take Cytomel (synthetic T3).
Not too many years ago some of the bodybuilding organisations where thinking of using a competitors muscle mass verses their bodyfat levels to determine if they where using steroids or not.
Can't remember all the details, but it was in an article in Flex. It had something to do with the fact that you can't be 230 lb's at 5' 8" or 9" and 3% bodyfat at the same time. It is just impossible to do this naturally, no matter how good your f**king genetics are.