It definitely sounds promising to me also. He has a plan and seems to feel confident that he can do what needs to be done. How you heal is uncertain, and so it is for all of us. I would be encouraged if I was you.
As one lady said here, you could always try another surgeon, to help either solidify your decision, or continue searching until you feel even better. But in my opinion, I'd probably go for it with him.
It's scary, but it's nice when you finally settle on someone, and then just set the date and go through with it.
I sure am glad your husband was with you to help be the eyes and ears that you were unable to fully be.
As I read your post, I felt a little squeamish thinking of my revision and how it is only 3 1/2 months old now, and what you said about the ends of the bone being porous, and hoping they take to the new prosthesis, within six Months.
To my knowledge, I did not have rods and sleeves to secure it into place, but I know that there was an extra prosthetic stem that went 3 to 4 inches or so up into my femur bone, which I didn't have originally. He told me that is how he does revisions. I don't know of any other alterations he made during surgery, and he didn't seem to say there were any more besides that.
I saw my surgeon two weeks ago and I asked him about some of the structures in my knee. He said I have no more ACL or PCL, but I do have my MCL and LCL. I didn't have trouble with patella tracking so no alterations needed to be made there either.
You have some time to process all of this and think about what is next. None of it is easy, I know! I had three surgeries too, but all within 10 months, which is pretty crazy when you think about it!
Even when I had decided to have my current surgeon do the surgery, and I even scheduled it, I still went to see him again and talk with him one more time, and probably asked some of those same questions. I just needed some reassurance and he gave that to me. Then I was able to finish the job without uncertainty.
And yes, my gate improved a lot because I had proper knee alignment and a straight leg, my back and foot arch also hurts much less. Those symptoms aren't completely gone yet but going. I did walk on that crooked leg for six months so gait and function adjusted to that first. And now they have to go back to normal. I am still dealing with my 13 month old knee too, so my troubles are not over with yet either. But it is a process and I am moving forward.