Andrew,
Glad you have the confidence to go forward now.
Di you by chance leave the option open with Clavel to use M6 regardless of the BD thing? Meaning once he gets in and actually can see or feel that the otpion might still be for the ADR you seem to really want?
You might want to bring it up with him. Very receptive guy to options. He might just stick with the plan anyway but worth asking when you actually see him in person.
Also as Optimistic states dont underestimate the recovery. Its a bear to many and not so much for some.
6 months today for me and all is right in the world other than stiffness in the morning which 10 minutes of walking takes it away. Remember your back is gonna need to readjust to the new stability and being straight so take your time. Posture, walking and exercise will make it happen but it is work. Get off any/most or all pain meds as soon as you can that way your mind is clear and the nerves can start firing normally.
Lastly, yes there is a cascade effect when other things start to come out of the blue. Other stuff will hurt that didn't before so get your mind strong and deal.
It takes big brass ones to do this so welcome to the club of clangers soon!
Wish you the best safe outcome. Tell the crew Frank P. (aka Superman) said hello. Also know some great places to eat as well.
If you need any pointers feel free to PM me.
All the best,
Frank