Yep Alan, that’s the way to use the validator to organize your collections and yes also combining in this way will be the best point to sort and filter the final 10.
For general robustness the Monte Carlo is enough.
Unless you are trying to target something specific with the Multimarket or Walk forward validations but otherwise Id just stick to Monte Carlo. That’s what I do.
It sounds like you are building up your pool of strategies nicely now right?