Hello Lucas, straight to your questions.
1) You have to test the 7 EAs+Gold EAs and see which one performs best currently, we can’t say which is the top performer because tomorrow it may not be.
2) If you use the default set files then it’s okay to trade with 3 EAs. The set files will allow a maximum daily drawdown of 1% per robot. If you want to be on the safe side, you can additioanly decrease the lots. For example if you want to have no more that 1% daily drawdown then you would need to divide every lot by 3 becuase you have 3 EAs running.
3) It is a personal choice if one will close trades manually. But personally we do not close trades during news. We are working on implementing the news into the EA.
Kind regards,
Marin @ Customer Support team