Thank you for your feedback.
I have some altcoin that are already with 20% gain, but it is just small change since I invested just a little to understand how it works.
Maybe a good option would be to allocate some money and start doing some day-week trades to get the idea of how much would be acceptable and then start building a portfolio with long term coins.
Altcoins are different animal mate, lol. Most of them are just pump-and-dump coins so just be careful. You will see a lot of coins being pump with no apparent reason, some as high as 100% in matter of days. Just be careful though.
For me a good 5%-10% will be a good exit strategy for me. I don't want to be that greedy, for daily trading hard to say probably around 2%-5% if you are that lucky and good.