I go for both too, invest in ETH and farming BTC with GPUs
Seems good plan for me :p
I think at this point should not invest in bitcoin. We can see at the moment that bitcoin girls are very difficult to guess, the market is fluctuating constantly. So if you invest in bitcoin it will be very dangerous, the risk will be very high. You invest in ETH will be much safer, the price of ETH also fluctuate in a very large range so if you analyze well you can earn a lot of profits.