Thanks very much! I agree that some light "range of motion" stuff would help in the healing process. Thinking about starting with walking, maybe graduating to recumbent bike for some higher intensity. As for resistance exercise, just want to start with walking lunges and then onto light squats (no leg presses for sure)! In terms of upper body, gentle water aerobic type stuff might be a good start. Maybe graduate some day to light kettlebells, but agree no pushups or bench.
We'll also continue to research options for training after implants, though I worry most info will be geared toward augmentation. My wife had all breast tissue removed and implants to "replace" the tissue. This made for more extensive surgery and multiple reconstructive proceedures; hence the very cautious return to activity.
Great feedback, many thanks again!