Assuming your finances are a definite 100% according to reasonable calculations, this thread might be a good read from a similar couple last night:
Yet another OMYer
A couple of points in it that might hit home, since you mention "guarantee complete confidence":
- At a certain point, the risk of dying outweighs the risk of a catastrophe that might wipe out your assets.
- And if that sort of catastrophe did happen, money probably won't be of much use for anyone.