I don't think there is a need to worry about cancer in the short-term (say a 30-40 day run). Your dose actually looks a little low to me. I'd use IGF-1 LR3 again if I needed it to heal along with insulin and androgens.
Cancer risk is really just accumulated dna damage over the long run...so chronic use is where the concern lies.
Here is a post from my thread that touches on what pumbertot did to heal his Pec after surgery.
http://www.professionalmuscle.com/forums/showthread.php?p=469790
If you can stomach it, injecting into wounded tissue might be better.