I would pay for the remainder of my siblings college and loans... My Mother and Stepfather do pretty good for themselves so I would payoff there car loans and credit card debts as well as my Father and stepmother.

I would payoff my own debt flip my house and get one with more backyard for the misses, as well as putting money away for college for the stepchildren. Like Mick said invest the shiit out of the rest for retirement and security late in life, Other than that I say with the best intentions I wouldnt really alter my life much, I would still have to work... And I would keep my eye on a good resteraunt to buy since I love good cuisine and the culture that surrounds it

Donate considerably to the cancer society since I lost many of family to the horrible affliction