Hello kdeinv and I too will welcome you to our little club. You've already seen some good advice and while somewhat repetitive I'll add my thoughts.
You've stated 5 cores positive with a G6 - what were the % involvements in each positive core? Knowing that should be part of your understanding of your PCa stats. I'm also guessing no perineural invasion or "PNI?" Johns Hopkins has a free guide to understanding your Gleason Score - here's the link to acquire that:
http://www.johnshopkinshealthalerts.com/register_ppc_prostate/gleason_reg_landing.html
The NCCN also puts out a very comprehensive overview of Prostate Cancer, here's the link to that:
http://www.nccn.org/patients/patient_guidelines/prostate/
In addition to those two to get you started, I've also accumulated a significant amount of research, studies and so on that I'd be happy to share. You can access my e-mail address by clicking on "A Yooper" on the left side of my post if you're interested.
At the end of the day if/when you choose a treatment approach I would simply add to what others have said - ALL modalities have a steep learning curve for the respective practitioner - so I would urge you to be sure to understand that as you do your search. Many of these medical professionals will avail themselves to a phone consultation if you're unable to travel to meet with some of them - gedman provided a couple of excellent guides to the types of questions you'll want to ask. Near the top of the list for me is to have them provide to you what THEIR individual statistics are for treatment - % chance of recurrence for someone with your specific PCa stats, side effects such as continency (and be sure to have them define 'continent' - as to you and I it means NO issues while to others it may mean "only one pad per day or only when straining") and the same goes for ED. Being treated for PCa does not automatically include nefarious side effects. . . .
So then you're about to enter that zone that some have affectionately called "paralysis by analysis" - but that too will be o.k. We're all here for you to ask away and support. Please keep in mind that none of us are medical professionals - but rather are men (and supporting women) that have been there, done that.
Best to you.