I will invest in Bitcoin and altcoin at the same time but the money earnmark for bitcoin will be higher! Crypto currency is unlike firex that you can predict certain pair against other! Crypto is more dynamic and you may not understand what is driving a price of a coin!
Taking care of two different kind of coins and that too at the very same time is not doubt very much tiring thing to do. It will involve lot of efforts and hard work and you do need to put in lot of extra efforts, only then youll be able to manage them in efficient manner. I will put my bet on bitcoin as this is the most demanding coin and it is less risky to invest your money into bitcoin as compared to that of altcoin.