With the recent changes in BTC price, altcoin is getting weaker against BTC, so, this is a good time to pick and fill the bag. Another important part is, after BTC bullrun, once BTC get stable, altcoin follow the bullish trend.
Is it right decision to pick some more altcoin?
Last year was the best period to do it. Now, many altcoins gained well, and they might not change their price for several months. It seems to me that day trading is a very good choice now, but you need experience for it.