That's quite a number of coins... I'd suggest specializing and investing in far less coins. That's way more profitable, as it would be way easier to predict future price movements of a lower amount of coins.
Personally, I think that it's not a bad investment for long-term, but it's just too unpredictable... They could all rise, just as they could all fall.
Therefor it's very hard to call it a 'good' or a 'bad' investment..
It depends purely on what you want..

Good Luck with it though!

Regards,
Trump