Better spread your money, but with only $250, you will get minimum profit by spreading to 4-5 altcoin. Better put your money into 2-3 altcoin, you will gain more significant profit. And regarding to your list, my best advice is POWR, ADA, and ZIL. Those three are undervalued, and they will give you quick profit.


But to open your knowledge you better do a research to other altcoin outside your 4 lists. There are a lot of promising project, (coin already on Binance), TRX, XVG, EOS, VIB, etc