im cannot do two coins ate same time ?
Which coin can do more value if done separately? Can I do both at the same time?
I don't think there are any coins that are still profitable to mine with CPU, but you'll be definitely be able to mine with your GPU's
I think Ethereum is currently the most profitable to mine with GPU, but if you want to be paid in BTC and automatically mine the most profitable algo's I recommend you look at Nicehash's miner.
You can mine two types of coins since you have two cards.
Unless you want to smooth the risk of altcoins value volatility, it's not really worth it. You should just mine whatever is the most profitable right now.