Hi Ricky,
You should use a longer period such as 3 to 5 years to generate strategies so as to cover multiple trending and ranging periods. In my opinion the OOS period should be longer than the future time frame you wish to trade before updating EAs. For example if your strategy is to update EAs on a weekly basis then make the OOS period at least 2 weeks. I would also suggest selecting strategies in the Collection that are moving upward on the right edge of their balance line charts. I also suggest using more entry and exit indicators so the strategies generated will execute better trades such as 4 entry indicators and 2 exit indicators. Experiment, try different combinations, see what works best for you.
Alan,