5k dollars amount is good capital and for sure you can different kinds of altcoin with that amount.  You can buy waves an ripple that coin is potential coin and for sure you will gain a lot of profit and possible your 5k dollars become half million dollars.  You can buy only the coin who cheap because if you buy a coin who the price is very high im sure you will not get your target profit.  Because even the price increase it's hard to become double the price unless you bought coin who price is very cheap they can easily to increase like 10 times more.  But I suggest make a research so you can know what coin is the best for that amount that gives you high profit.