I just replied you in your other post.
There is a great GK Center in San Diego. www.sdgkc.com
Additionally there is a CK Center in San Diego. www.sdcyberknife.com
Check them out as they are both very reputable. Since I live in San Diego also, I almost went with them but decided on Stanford given my tumor condition and personal preference.
Don't worry, you absolutely do not have to travel outside of San Diego for radio-treatment. We are lucky, we have treatment venues right at our doorstep!!
Since I am in your neighborhood, please do not hesitate to let me know if you have any questions. There are a few of us ANers locally. There are some treated by GK, some CK, some surgery.
One more thing, I don't think having radio-treatment will make microsurgery in a re-growth scenario more diffiult if it is in the hands of an experienced surgeon. The challenge is to find a doctor who can provide unbiased recommendation in the best interest of the patient.
Best of luck,