Not mine BTC.

Bitcoin mining is not going to be profitable for small-scale miners unless you're one of the first to receive a next generation of devices. Even at large-scale, where more cost-efficient devices can be employed, it is hard to make a profit.

If you're interested in mining, consider alt-coin mining, where some profit is still to be had (though it's not a get-rich-quick-scheme either).

Alternatively, just buy BTC with the money and hold the BTC or invest it somewhere (not in mining bonds ^^).