Considering how you already have 20 coins, I don't think you need another coin lol. Heck as others have said, 20 is too much. Just move the other investments into coins that you think would perform better and if you find anything good, then move some over as well (or slowly invest in it).

As for taking profit and doing what after it, it's always up to you. Personally, when I take profit I usually don't buy in again for sometime, waiting for some good spot to start buying in again for shorting. That, or looking for a new coin. For DCA I'd probably give the coin a break for a few months, maybe look for another one instead and let it dump down before buying in again (if I'm confident of it going back up that is).