Cardano project developers are still creating their project. But I see how they work. The next stage of the platform, Shelley, will be launched soon. In the future, cardano can compete with ethereum.

Forcibly no one forces you to invest in these coins ... You have the right to choose what to invest in. There is a simple fact, these are 2 top coins, which have huge capitalization, and they will not be able to just collapse in one moment. But with alkoins this can happen.

I agree with you, but if Ethereum falls, then developers can stop using the Ethereum platform to create their tokens and then Ethereum will cease to be so popular as it is now.

this year I will buy lots of altcoins, but for this month I will focus on buying ethereum. ethereum has the opportunity to rise because of hard drive, so August is the best time to trade ethereum in the market.

Your shopping list like you wrote is cool, actually I'm holding all the coins on your list except XRP. I think you should also look into ADA, BNB just to mention a few. It's good to hold coins of projects with solid foundation for the long term. We are all hoping for a great uptrend for crypto market, I'm also buying some coins but that's when I think the price is down comparatively.