Hi Stumac
I hope your recovery from your prostatectomy has gone well. As an ordinary (and new) member of this forum I'm afraid I am in no way qualified to answer your question about when to start with your new pump. I think the best advice would be to ask at the clinic where you had the surgery, or at your GP. They must get asked often about this.
I use my pump because of medicine induced ED and began, only a couple of weeks ago 'practicing' each evening. In my case, the system seems to do everything it claims. I have to say that I have yet to put it to the test with the wife, but I am optimistic!
I hope you get some more helpful replies soon.
Best wishes
mrsoftee