Also I think that for finding EAs that will work long term I would be putting say 100 or so EAs that you have generated onto a demo account and just leave them trading for a few months and then view the results, but a quicker way would be to run the reactor with an end date set the 3 months in the past and then use the validator to check how they performed for the 3 month walk forward.
It all depends on how proficient and confident that you can match EA studio with demo trading effectively.
In my opinion people new to EA studio should start out managing with demo for a while before transitioning to purely using Ea studio to manage a pool of EAs.