Depends how aggressive you want to be with it but I would spilt it up into 5 bits then pick 2 coins from the top 25, another 2 from the top 25-200, and then one coin outside that for a pure gamble. That way you diversify and at the same time are in some solid coins too.
imagine how much would he invest in every coins your saying with $50?i think you
missed how much is the capital.but you have a great straategy if only that amount was enough.
For the OP i think you may put that for long term in ethereum so you can make it tripple
by next year and to have some funds to make another capital is join campaigns or bounties