Proviron @ 50mg (2 tabs) a day should do the job to prevent gyno/estrogen conversion. Start it at the beginning of your cycle and run it through the Clomid. I use it and I love it!

Clen as anti-catabolic: not sure if I believe that. I have seen studies that it works as an anti-catabolic in rats, but then people have commented that the receptors that it acts on to produce the anti-catabolic effect in humans are far less prevalent. Can't find the studies or commentary, but that might help you to start on your own research!