Just found this thread, as it's what's being suggested for me.
PSA was 57, which has caused them to do lots of tests to find any spread, but they've eventually decided there isn't any although it is causing bulging of the prostate, so T3aN0M0, 3+4=7.
Have been on HT for a while, initially 6 months on 50mg bicalutamide during all the tests, but that turned out to be the wrong dose* and only brought PSA down to 47, so I'm now 5 weeks into 3-monthly Zoladex injections.
Plan is to have lower dose RT to whole pelvis (as a precaution), with a more concentrated RT dose to the prostate. This will then be followed by high dose brachytherapy afterwards.
They're sending me full details for the procedures (which I haven't got yet). There's no hurry - they've given me a month to think about it before next consultation, and it would be 2 months before any treatment starts anyway.
There is also a trial ongoing called PIVOTAL to assess the benefit of including whole pelvis RT which my consultant will put me forward for if I want (although my unusual HT might rule me out), but he is offering the full option of prostate and pelvis RT outside of the trial as he thinks it most suitable for my case, plus the brachytherapy. (PIVOTAL trial doesn't include the brachytherapy.)
So did you go ahead with this plan?
* 50mg bicalutamide is just to prevent harm from the testosterone flare (boost) you initially get when first starting Zoladex before it shuts down testosterone production, and not intended as a HT by itself - that would be the 150mg dose