Hey Animti,
I would suggest you first test the EAs on a Demo account and create your system for managing the EAs.
You can see the drawdown from the backtest but it won’t be realistic because at the end of the day you are going to trade the top EAs from all the 99. So you can’t say which EAs you will use.
When you select the top ones, for example, two from each currency pair, you can see then estimated drawdown.
Also, it is important to keep an eye on the Demo and the Live account so you will be trading the profitable EAs all the time.
Cheers,