Are you using Linux or Windows?

I tried a Linux Live CD but, the client had pre-reqs and it looks like you need a full install.  I get 10Mh/s currently in Windows 8 using one eVGA GTX 960 but, it crashes the driver after a few hours.  It seems profitable especially at $12.  I want to take the plunge and build a real mining rig however, I'm nervous the profits might not last and I'll regret it.

> Any recommendations as to what I should do with ETH?

I'd personally hold if you feel the price is stable and/or going up.  Otherwise if you want to be conservative convert to BTC on an exchange.