It is best to put all the EAs in a demo account. Wait 3 to 5 days and move the EAs with more than 3 closed profitable trades to a live account. This indicates the EAs are at least trading once a day if you are waiting 3 days or at least once every other day if you are waiting 5 days. Then every 3 to 5 days look for the top profitable EAs in the demo account and place those in the live account replacing the EAs in the live account not performing well.