Hello there @tonimani. That is a tough question. This what I would do if that money were mine¹:

• 3000$ to buy BTC using coinbase, then selling it using localbitcoins.com. I would do this for months(if the BTC trending is UP), just to make more than 10% per day. Buy & sell, repeat the process. Key word: compound interest.
• 3000$ for long positions, after studying posible coins to my portfolio as Ripple, EOS, TRON, STEEM, SBD, etc. And do not forget about APPICS which is coming.
• 4000$ for trading.

STEEM ON.

1: Taking money from other people just to give a shoot, is a big responsibility i wouldn't take until being very very very sure about what to do.

PS: This is just an answer in a hypothetical space. Do not take it as an advice.