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
Yes, it is not a bad time to invest but rather a good buying opportunity because altcoin nowadays are down to more than 90% of their all time high. Among the coins that you mentioned, I like Cardano (ADA), NEM (XEM), and PUNDIX (NPXS) because you can buy tons of them in a very small amount of USD and their continuous develipment on their platform even though the market sentiment is very bearish.