I get dozens and dozens of them. They do not develop until the hen sets on them for an extended period. There’s noticeable development after 24 hours if you know what you’re looking for. If you collect eggs daily, you will never notice.
I personally would find a good home for both cockerels. Separate and free range might just bring on the ‘quick while I have a chance’ mindset and it get ugly.
The right cockerel and two females could be manageable IMHO.