Welcome to BYC! I started with chickens over the summer and the people of BYC have been great. Please visit my BYC Page for my blog links that you may find informative or amusing.
from Ohio. So glad you joined. I would think they would be fine since they are young. Just keep an eye on them as the turkeys will grow a lot bigger than the guineas, so just watch for picking. Also if they have plenty of space to more away from one another would be better. Good luck.