Is this the same incident as reported
http://www.safespeed.org.uk/forum/viewt ... 894#143894 ? If so, are you the same person as Nsync? If so, please delete one of your profiles as dual registration is not permitted on this board.
If not, please accept my apologies for what are remarkably coincidental figures.
As for "what to do"... if you're repentent it can only help - if it's genuine.
Hardship mitigates fines, need of a car for oneself makes little difference. However, dependants living at a distance and your need to visdit them to assist with family members etc may swing things - although double the speed limit is rather asking for things, even at 5AM.