You did not say what your PSA is and a gleason 7 is right in the middle. If the PSA is high you may want to consider bone scan, CT scan and chest xray to determine spread if any. As stated earlier get as much information about your case as possible before making the decision for a particular treatment.
I chose radiation due to indication of spread to lymph nodes. Seemed to be my best option and the treatment has been relatively easy on me. My research also indicated that radiation was as effective for control as surgery especially for localized PCa. Lots of information on this on the web.
Best of luck to you,