Is it realistic to treat them a bit like new chickens, i.e. pen them up for a couple of weeks, then just let them loose and hope they hang around? Or do they need more substatial housing, pens etc? Would an adult male be aggressive to our existing chickens/guinea fowl? There is a pair of Reeves available, both male, one juvenile and one mature. We're not looking to breed, so don't feel the need for a female. Or would it be better to start with eggs so they can grow up on the property with the rest of the flock?
Our guinea fowl roost on a fence and just hang around. They've moved and lived at 3 houses with us and haven't left yet, so I assume they don't mind the service around here

** By "hang around", I don't necessarily mean sleep in the chicken coop and sit on the deck, just perhaps stay within a couple of hundred meters of our house.