I would suggest that if you are looking to invest, invest now! By no means does past performance guarantee future success but providing that you manage your risk accordingly I would say its a smart move now, otherwise you may well end up regretting not acting right away.
well i think the best thing to do is to wait for the moment that the price will go down because if you invest btc during high price maybe you need a big captital or maybe it is too risky because we really cant predict the price of bitcoin and we can really see from the past the difference of buying btc in a high price.maybe we can gain but only few unlike when we buy it in a verry low price then sell high we can gain much.so then i suggest to wait for low price.
I think we have already missed chances to invest money in bitcoin when the price of bitcoin was trading blow 4000$. Therefor i think we can afford to lose any other chances, i think it will be good if we invest money in bitcoin right now, because the price of bitcoin is still expected to increase more and more, and may be very soon reach to 7000$. There i think it will be better to invest money in bitcoin right now.