I've never had the rings that came with my pump out of the original bag. The pump is for rehab for me, as others have already discussed. Atrophy is the thing we are trying to avoid while the nerves have a chance to recover (if they were spared).
Starting at 8-9 weeks is neither too early nor too late.
The daily Cialis started early is intended to help rehab. According to my uro, in the early months, it helps, but you are not expecting an erection from it. Dr. Mulhall's book is very good on these sorts of questions.