just keep an close eye on them. watch for turkeys standing around, drooping, ect... that type of stress can lead to downfall. I wouldn't worry about the guineas as they seam to be next to indestructible! The only thing i notice with turkeys is its all about numbers. when i was blending 2 groups of different aged youngsters together, if there was only 1, the bigger ones would chase it, but when i let them all out at once, the bigger ones fled from the flighty antics of the younger ones, and now don't care who's walking where. I still keep a close eye, particularly when feeding and what not.
Close watch is the key. just because you don't see an action doesn't mean that something isn't going on, just want to watch for fall out.
Sib