Lagerdogger's got a good point there, as harsh as it may possibly sound to some...
If they're fertile and you're determined to keep them you may want to invest in a good cage system to ensure your birds don't genetically help eliminate what is left of the wild population. There's also the chance they may be unfriendly or flighty towards humans as a result of their partly wild heritage. Chances are also high that they would be weaker against most common diseases of domesticated poultry.
With some breeds of turkeys, natural fertilization/mating is impossible, so we propagate them via artificial insemination, and have done so for many thousands and thousands of generations, as with some other species. Instincts must adapt to environment, within each individual's lifetime, they are not immutable as some seem to think (after all we've bred maternal instincts out of some breeds, as one of many examples) and we have altered some breed's sexual instincts by becoming identified as their mates and sources of sexual pleasure. So now we have males and females whose sexual instincts are bonded to and triggered by humans, not their own species.
If you hatch partly wild ones with partly human sexual attraction instincts, they could become quite aggressive; after all you are going to be considered 'one of them' as species boundaries have been blurred in animals that are sexually attracted to humans. The most human-aggressive chickens, cattle, and other species of livestock are usually those in which humans are heavily involved in artificial breeding, because to them we are either mates, competition for mates, or both.
Anyway, best wishes.