In reply to richv:
How will they handle long days on poor sleep if you end up in the dorms in the huts? The bits I've done they'll be fine with, just make sure you do it late in the summer to avoid problems with old snow and book rooms in the huts. Are they / you skilled-up on emergency procedures, because it can get serious quickly up there if something goes wrong. If you've all got the skills then do it - it's not a technically difficult VF, but it is an alpine experience requiring an alpine mindset and self-sufficiency skills. If you decide it's a step too far now then there's other things you can do up there or the rest of the Dollies that are less serious whilst getting you into the scenery, gaining experience & whetting appetites.