Your surgeon will use whatever approach seems most relevant at the time of surgery. It may well be that once he starts your surgery, he finds that something different would work better.
It's obvious that he's giving it plenty of thought and I think you can leave the decision and technicalities to him - he's the trained expert.
I know it's hard, because this revision is the biggest thing on your mind, but do try not to over-think it.
I have a date for my shoulder replacement now and I do find myself thinking things like "How will I manage to dress myself with one arm in a sling for 6 weeks?" It all does seem to consume my thoughts, if I don't make myself think about something entirely different, so I have a lot of sympathy for your thoughts as well.
It's so easy to think about your surgery all the time, but try to give yourself some "time off" now and then. Is there something you'd like to do before surgery? Can you give yourself a treat, talk to an old friend, find some new novels to read?