A good investment strategy for me is to become a swing trader wherein I will choose 2-3 coins wherein I buy coins when there is a price dump and hold for semi long term. I have tried ICO offers right now but I think this year have been really hard in an ICO phase in which it is hard to predict what will be the price after ICO.
That's an investment tactic, not quite a strategy yet. If you have 2-3 coins, it's a start but you are still massively exposed to risks.
I am trading stocks for over a decade and crypto since last year. I also agree that is easier to trade stocks, simply because the volume is so high that a few whales or big investors cannot influence the market as easily by dumping their shares. Its great you have a diversification plan instead of going into just one coin but also think about moving assets from crypto to fiat, stocks or raw materials and precious metals. Otherwise you will still be massively exposed as you have all of your eggs in one basket. Different eggs in size and colour but all eggs. If the basket falls, your eggs still get crushed. Like we saw what happened yesterday.