Hi! Well, I would have waited a little more time, while mining, but yes, soon the 470x won't be so profitable.

But the main problem is not the DAG size issue, but that in less than 1 month, the profitability has halved, because the network hashrate has almost doubled, and now the prices are little lower. They will surely go up again, but as miners keep on buying everything that's on sale (WTF! I think they even mine with coffe makers!), the situation is going to go worse and worse... I keep on mining (only 2 cards), because in this world... Who knows!

BTW, do you know this?
Proud Miners Calculator & Tools
You can do all calculations very easily.

Have fun!