One of my friends asked if this would be good time to buy really big stake. I said yes, but I would like to hear more opinions.
since we don´t know what will happen to the chart, just level out the risk a little bit:
tell him do devide the investment sum into 5 or 10 even slices. buy every week at the same time for the same amount. that will take out most of the volatility and he will not get cought at a top.