Your age and other health issues (and sometimes relational issues / lifestyle expectations - Don't put the "cart before the horse!") will be the keys for your decision of which treatment path to choose. Tanya did an excellent decision tree for you. You will need to weight the information personally for each decision.
If you mention what part of the country you are in, others nearby can give you some feedback on facilities and physicians they liked.
Some will say that with a "6" that you have time to decide. I personally would not wait very long.
I had a "6" (age 54) and was told by some physicians there was no rush. My personal physician said not to wait. The tumor was touching the edge of the capsule. Biopsies aren't that informative.
Keeping you in my thoughts and prayers.