At the end of the day it is your decision, there are some coins I recognize and some that I do not, but if you think the coins have potential then you can take the risk and invest in them, however the issue is the size of the risk you could take, if you were to invest something between 1% and 10% of your capital in those coins then that will be fine, because even if you were to lose your money you could recover it relatively quickly with bitcoin, but if you plan to invest everything in those coins then it is better to not do it and rethink your strategy.