I think those are really important questions for your cardiologist!! Surely he/she has given you the complete advice you need on all that.
If you are interested in others' timetables, well, I'm sure we can share some experiences, but honestly...each case is so completley different.
I was in the "waiting room" for surgery for almost 3 years. I had a stenotic aortic valve. My symptoms increased at a slow pace, but were certainly manageable and not dangerous. I was put on Atenolol for PVC's (annoying palps) prior to surgery. I did not go into A-fib except for a brief bout just after surgery (somewhat normal). So far, so good at 7 months post-op (knock on wood). When it was determined that I was ready for surgery, I opted to take care of some other medical issues (a breast biopsy in my case....benign) prior to my surgery. My timetable was.....telling echo mid December, colonoscopy late December, surgical consult January, biopsy January, angiogram March, surgery mid-April. The anesthesiologist for the biopsy was very unhappy having to treat a "critically stenotic" patient, but it all went fine. I don't know how different mitrals are from aortics.
Obviously, having had 3 OHS before, you know that this type of surgery can leave you anemic. Thus there might be some danger in going in that way! Then the affect all those meds can have on your digestive system.....ugh. I would think that it is very wise that you are waiting for those things to heal up.
If you are worried about A-FIb, you can always have an event monitor. That will isolate the type of palpitation you are having.
Please be in contact and conference with your doctors about these questions.
Good luck and let us know how you are doing! And stay away from holiday chocolates!! My cardio swears that she has more complaints of palptations during the holidays because of stress and all the rich food and chocolates!!
Marguerite