Honestly man I wouldn't even bother with mining. In this day and age ROI is pretty shit and you're likely not to make anything by time you factor in electricity and whatnot. Mining isn't a game for consumers anymore but for large corporation that have centralized the BTC mining POW.
Honestly better just to buy BTC and invest them somewhere.
Curious, what is your idea of a sound BTC investment? Gambling or signature campaigns?