I would buy :
A big house in Montana with a huge kitchen
2 new cars
have someone clean my house
take my son one place everyday ( museums, parks ,etc. )
buy my grandma a house and a car ( have someone clean that too. )
pay off my Inlaws debt
Buy 100 percent only organic food
Invest in a college savings account
adopt 2 dogs from a shelter to live at my new house
have lap band surgery ( 25,000 )
Send my stepfather and his new wife a dollar ( That's all she's worth )
AND HAVE MORE KIDS !!!!!!