You can invest your money in altcoins because they are pretty cheap right now because the price of bitcoin is rising up so their supports are weak because most of the holders of those coins want to convert their altcoin into bitcoin because they don't want to be a bag holder for long.
Well I think it's pretty simple, the OP should just buy all of them with bitcoins at the current rate and sell them same day next week and I'm certain there will be at least 100$ profit on each Bitcoin purchased.
Investing money in bitcoin is the right way to go as the price of bitcoin is going higher now so if he buys now then he can make some good profits in quick time as price is surely increase in next few days or months so if he wants to make best profits then he should take advantage from short term fluctuations.
But i think it is better to invest in ico (altcoin) with additional bonus, in that way you can earn up to10-40% of your investment, then wait for at least 1 to 3 months when ico is done, then sell your coin above the ico price, then withdraw your profit, in that way you can easily earn mong bitcoin and covert it to your currency, then you csn have your money back plus the profit you earn from investing it
Investing in ICO can give us huge profits if its price pumps after it gets listed on trading sites but the only issue is that many ICOs have turned out to be scam in the past so it becomes really difficult to trust them as we have experienced that only devs have made huge profits from it leaving nothing for its investors.