Even if the fathier chase sequence is removed, I would still be in favor of keeping the slave kid epilogue so long as we get the brief introduction to them as Rose is lecturing Finn as he uses the binoculars.
Of course, if they are arrested immediately, that’d be gone.
Which is why I also will be cutting the ending with the children. Those changes go in hand in hand like you said. Depends on how much you like the Broom boy ending.