I recommend starting with the coins that are in the template by default, but you are more than welcome to adjust the enabled coins list.
In my experience I've found that all of the coins perform very similarly in the long run with Cryptohopper, regardless of exchange and base currency. There isn't a huge significant difference between long term profits as long as you stick with a set of coins and don't change the list too frequently. It's really up to you and your preference which coins you want to use, just avoid the coins that hold their value at $1, like USDT, BUSD, PAX, etc, since they aren't volatile by design and won't ever be sold for a profit, if bought for some reason.
Bottom Line: It's up to you, just don't use stable coins in the "Selected coins" list.