I believe that you can invest in the crypto market at any time. Even if you do not have the best price to enter the crypto market. You will be able to compensate your losses by trading on crypto exchanges.
A good time exists now and those who had invested at 3500$ has already made 400$ on one btc in just a months or so . Also now price will rise in bull run and will give us multiple returns in this year as this year can be better than 2017 .