Good suggestion, but Binance doesn't have PI listed at the moment. Rumors say that they are going to list it soon, but we are not sure yet because I haven't seen anything official about it so far...
I don't think it's a fundamental decision for the OP to trade only the PI token. Binance has a very large selection of coins for trading, including crappy ones that have both high and low volatility. So the OP will have no problem choosing a pair to trade.