In my opinion, it's not a bad time to invest now. Some coins are really very cheap now and I believe the market will recover in the near future.
I want to invest some project such as, Tezos, Cardano, NEM, Dash, Maker, NPXS, Lisk, OmiseGO, Zilliqa, Komodo, Status, Waltonchain, Elastos.
It that a good idea to do it now? Any comments are welcome
If you have a lot of capital to invest then why not? You can take the risk as long as you are eager to earn in the near future. There is nothing wrong to invest now because it is also your strategy when it comes to investment or trading. There's a lot of altcoins now are profitable than bitcoin.