With this time now, I would say that you should not doubt.
I never seen this kind of price movement before, it's bullish already, BTC breaking resistance level today and it's still staying up.
Whatever coins you think of investing as long as it's legit, you should go for it, BTC will make them all pump.
Do you really think it worked that way mate, I keep reading where many people say bitcoin price will make the price of altcoins rise, I don’t see much inverse relationship, many people during this pump period of BTC will sell off their altcoins to buy BTC and selling off altcoins means the price will fall, it is only when bitcoin rises and started going sideways that some altcoins and not all will start rising but until it starts going sideways, bitcoin rise may not pull along with it other coins.
Let us take a look at last year too, BTC pump didn’t really affect most of my altcoins, I witnessed high increase in the coins I was holding when bitcoin was going sideways in the last bull Market.