I strongly recommend you to wait, there is still possibility that Bitcoin support will not last long, next stop is 1000USD and if this happen also altcoins will fall more, there will be the best time for buying more coins.
Waiting is a good thing because right now the situation is very bad, but waiting is very boring especially waiting for a very long time. yes if in the future the market will really be able to rise high waiting is one of the pleasures but if in the future it will get worse by waiting there will be no results. in the future no one knows, we try and hope you can succeed and be lucky.