You can buy some Bitcoin now if you are really a risk-taker or if you think that days from now Bitcoin will still be growing, maybe trudging the way to the $10,000 hill zone. In addition, since many alts are also moving, you can select some 5 good alts where to invest your money and encash them whenever you already realized a handsome profit. As you might already know, investing with cryptocurrency can be carrying some risks so always be informed and do your own diligence and at the end don't be shocked if you lose some money or better yet made some good ROI.