Only cash out what you need for your personal spendings and maybe some other values you can easily buy like gold  and build up your reputation on localbitcoins till you are 18. When you are 18+ sell a larger amount of it and buy a house for you and your family. If you want to invest in mining or try investing at the stock markets use small amounts for testing till you convinced yourself that it is something you wanna do longterm.
You also need to check out what happened to the price of LTC and BTC after silk road and atlantis were closed.