How Long Does It Take for Alloderm to Completely Integrate into the Body?

First, I would not do any exercises unless approved by your surgeon. Alloderm will generally show signs of incorporation over a six month period.

Alloderm and tissue start to heal together immediately and are reasonably "stuck" after about a week. I generally see drain fluid output that is minimal about a week after using Alloderm which indicates this to be the case, along with the fact that I remove drains in most patients at about that point with only rare seroma problems. For breast cancer, I exchange expanders for implants routinely at 3 months after the expanders are put in and the Alloderm is well integrated. 
As for quadrant exercises, I would recommend asking your surgeon. The way the Alloderm was secured to your tissue and the other things done to treat the CC will be important factors in determining appropriate quadrant exercises.