Haha, if you are not trolling congrats on having the capital. HOWEVER don't just put it all in, buy slowly and even look into buying on here with trusted users, not to inflate the price. You don't want to lose more than you can afford to.
If I were in your shoes, I wouldn't invest the million. Why not try at 100k, have you ever thought of getting into trading? Spend some on professional training to become a better trader. Also don't lie to your Dad about it, he has put trust in you for this startup, why not think of actually setting up a startup? Hell, you could even buy some btc in bulk and set up a site to sell it like bittylicious or even on here.
A lot of people would love to be in your shoes, but not if you lose value. 1 million in BTC can very quickly see higher losses as well as profits. Think this through, take the advice of others and make your own decision.
best of luck