Rusty. Don't worry about the finger. It's not that bad, and if you need a biopsy ask for a transperrienial one which is much more comfortable, if only for the fact that you're out for the whole procedure. It's also a lot more accurate.
tdracer: I think we are working on the same lines. I have one positive core close to the periphery which the surgeon said would increase the chance of me having a positive margin (and therefore a higher chance of failure) so I figure zapping with a little extra spread to pick anything lurking outside the capsule seems more sensible.
Good luck to you both with your treatment.