You should get a diversified portfolio.
Mix it with Bitcoin, 3-4 stable altcoins like ETH, DASH and NEO as well as some "underdogs" with a quite low market cap but decent product (i.e. Zcoin, Boscoin, Shift). Additionally you might invest in some promising ICO's as well!
No, diversifying it with such a small amount of money is not good, too slow benefits, he should all it in a good project