I am sorry for your news. A 3 month PSADT is indicating it's those grade 4 cells. RT sounds right but you also may want to bite the bullet and also engage a prostate cancer oncology specialist. I have been down the road of Surgery/HT/RT though I chose to do the latter two before a PSA rise and because of extensive spreading. Radiation will be a breeze. But ADT isn't so fun but a regemin on it might be in order as well.
Remember to stay positive. Don't let this keep you down. You still can do very well.
Age 46 (44 when Dx)
Pre-op PSA was 19.8 : Surgery at The City of Hope on February 16, 2007
Geason 4+3=7, Stage pT3b, N0, Mx
Positive Margins (PM), Extra Prostatic Extension (EPE) : Bilateral Seminal vesicle invasion (SVI)
HT began in May, '07 with Lupron and Casodex 50mg (2 Year ADT)
IMRT radiation for 38 Treatments ending August 3, '07
Current PSA (May 11, 2009): <0.1
My Journal is at Tony's Blog
My InfoLink page is at Tony's Prostate Cancer InfoLink Page