Recommendations for New Isopods?

Hey everyone, I’m still new ish to the hobby (few months) and I was looking into more isopods. Currently I have about 25 Dairy Cows (Porcellio laevis) which I’ve seen doing their “business” but no babies yet haha

I also have around 300 ish Powder Blues (Porcellionides Pruinosus) which I started from 25.

What would be some good beginner, fast breeding isopods to add to my family?

I do live in Oregon, so I’m likely waiting for winter to end but want to start my planning now 😁