Hi Gavin, sorry to welcome you to our little band, however you have come to the best site for support and help.
As Bridget has said I am 68 and have just completed my Stem Cell Transplant. If you want me to give you my medical history from diagnosis (MM journey) so you can compare I am will be happy to bore you with the details 😀 . Any other help and advice I will be only to happy to help, just ask away.
I did a blog "musings from ward 9" which you might find interesting it details my SCT.
And, yes, as another baby boomer, I think you are taking the right path.
Kindest regards
David