The question that is often not asked is; what is the frequency of recurrence for radiation and surgery? From my research surgery has a recurrence rate of 20-30%. There are a variety of radiation methods that have a recurrence rate ranging from 4-10%.
The frequency of incontinance and ED is higher for surgery.
Following surgery the pathologist can determine the risk of recurrence. This can also be done by genetic testing of your biopsy samples.
The comment that if you have radiation you cannot have a follow up surgery. Reviewing the comments in this forum those that have a recurrence are typically treated with radiation and ADT.
The number of treatments for radiation depends of the method. I was offered 28 treatments at one radiation center. At Mayo I had a choice of 5 proton sessions over 2 weeks or 2 HDR treatments over 2 weeks.