I am not surprised to hear that you are tired and have been feeling the weight of your situation. This is not easy stuff. Emotoinal and finanical. Likely you are feeling battered and bruised, Burdened seems like a good word for it all. BUT you have carried it with such integrity. But YES put it down and feel yourself standing upright, tall and proud.
With regard to wife and how she will manage the serving. I think that's best to be advised by people who have been through the process. My only wish for you is the minimisation any pain and discomfort for you and your children. IMO, (for what little it is worth) wife needs her put on her own BGP, and she is not your responibility in this instance. But that is likely me being a bi**ch (not normally a quality I possess, but it is a side of myself that is developing as I find my own self esteem - pendulum swinging the other way likely)
Yes please join the XC group, I am not brave enough to join a woman's group which is teaching XC skills. So I will live vicariously through you until I pull my BGP (big girl panties) on. Every time you put your riding miles on I have to get the calculator out to work in out in kms. Makes me laugh! You have good base now I, given your commitment over the summer, time to step it up. I have been visualising a new bike coming to you, something with incrediably sexy lines, especially down the front and back forks, and because I am a girl, colour is it obviously important, I always shop on colour first. I know the asthetics and functionallity will be important to you given your profession and teachnical/engineering leanings.
PS I hope you don't mind that we talk cycling. I don't have anyone to talk to about it at the moment and I am trying to ignite some passion in myself for again.
Anyway take care friend. Another weekend on the horizon, Friday 0939hrs here in NZ.