Put the eggs in the incubator, when they hatch, see if you can get step-momma chicken to take them, putting her in a nesting box and sneaking them under her seems to be popular. I've never tried.
chickenobsessed, I'm really happy for you. Make sure you watch your adoptive momma chicken, I have heard they will not take babies if they don't want them. Be ready with a backup plan, look into brooders you could use in case she does not want them.
To intruders, or other roosters, that's their job. You have to keep them in line, I've only had my roo try to "buck" at me one time... I kicked him... he didn't do it again. We have a good relationship. I used to have a roo that was a bantam (Napoleon complex), and he always bucked at me... I...