Is x profitable? Who knows? Yes so long as you don't mine and dump.

Seriously, I was mining 3 LTC per day last April. A few dollars profit per day. Had I kept them and sold at the top - VERY profitable but no I just sold them at market value didn't I?

Mine something that's going to stick around and hold it.

But I'd spend half that 10K on coins themselves. BTC, LTC and 1 other in a 40-40-20 split.