No, not if you go with broadbreasted, either white or bronze. They grow faster than heritage breeds. They won't be whopping record breakers, but should be able to get something big enough to dress out decent. I would try to find some ASAP, though, and with any luck maybe you could find some that are already a few weeks old, not just newly hatched - you never know, try looking on craigslist - there are a couple of small mom and pop type operations within an hour or so of me that keep advertising poults up to 4 weeks old, so it might happen.