So I am planning on putting 500 euros on Eth and Btc each(1000 in total) to hold for long term. Is it a bad time to invest in those crypto-currencies?
Who told you it's bad? Bad is your investing in eth lol. That's a alt and alts are no good. You'll earn lots of money in Bitcoins and will find superior returns in it to. Hold for the long term and invest on every dip so you have a good average over time. Investing in Bitcoin is the best decision you'll make, so put money in it and it possible we can see 7k before this year end. You have made a very good decision now, just invest in Bitcoin and see the magic.