First of all, welcome to HW...glad you found us and however you spell it we are sorry you have our cancer. I have a couple of thoughts along with answering your question:
1. You might consider getting a second opinion on your biopsy slides just to make sure that your are staged correctly. PCa pathology takes real expertise and it pays to make sure it is done correctly. A couple of experts who do a lot of second opinions are Dr. Epstein at Johns Hopkins and Dr. Bostwick at Bostwick Labs.
2. Assuming your pathology is correct you have plenty of time to make an educated decision and it is likely most any treatment will provide a cure. I can recommend 3 books, by Walsh, Strum and Blum/Scholz that will give you a broad perspective of your disease. Of course there are others but these are three good ones in my opinon.
3. If you psych can handle it, you may want to consider Active Surveillance of your cancer. You may just want to carefully watch it.
4. Re brachytherapy, that was my choice. The stats you provided indicate that you might be a poster boy for this. Brachy may provide you with equal cure rates to surgery with much less onerous side effects. Feel free to cut and paste my "journey" shown at the bottom of my signature if you would like to do so.
In any case, please feel free to ask any question you want and please let us know how you progress.
Age 62 (64 now), G 3 + 4 = 7, T1C, PSA 4.2, 2/16 cancerous, 27cc. Brachytherapy 12/9/08. 73 Iodine-125 seeds. Procedure went great, catheter out before I went home, only minor discomfort. Everything continues to function normally as of 12/8/10. PSA: 6 mo 1.4, 1 yr. 1.0, 2 yr. .8. My docs are "delighted"! My journey: