If any compost smells bad and is still warm to the touch it is not ready, and if someone were to compost animal carcasses and try to tell you that it is ready after only 3 months of digestion they do not know what they are doing and should be avoided.

The seller has a broiler chicken raising operation.

Did you ask about antibiotics? They're routinely fed to broiler chickens in large operations. Antibiotics take the place of the immune system. Energy not spent on keeping the birds naturally healthy goes into growth. Antibiotics pass through the birds into their manure.

He claims that no hormones are fed to the chickens- just corn.

He's telling you the truth. Poultry are not fed hormones. They were many decades ago but not now.

Residual antibiotics found in animal manure is discussed here:
http://www.environmentalhealthnews.org/ehs/news/antibiotics-in-crops

Composting the manure appears to reduce some of the antibiotics.

Think I'll use the rest of my load on the shrubs instead of putting it in the raised beds.