I also have lots of livestock and also do them twice a year.
http://www.fresheggsdaily.com/2014/02/common-herbs-and-their-health-benefits.html?m=1
This is a great page about what herbs benefit your flock.
I let people come see my flock with appointments, I also know Terry Jones (903-388-4440) lets people look at his program, but he mostly breeds waterfowl.
I deworm with Wazine twice a year during my hens molt so it doesn't effect their egg laying. You shouldn't deworm chickens under 12 weeks of age, so I would recommend doing it once they start their first adult molt. Are you ok with chemicals or do you want a natural solution? I also do natural...
I use Wazine twice a year, it's a poultry and swine dewormer that you can get at a local feed store. It does have a two week withdrawal period where you cannot eat the eggs which is a bummer but understandable.
I also do natural remedies year round including garlic, wormwood, nasturtium, and...
I'm not sure... It's unusual that it's not bothering her. If you feel the neck does it feel like anythings dislocated, bruised, etc.? Do you have any pictures?
What a great idea!
Some stuff I compost isn't chicken friendly (potato skins, coffee grounds, avocado peel, etc.) so I do like to have an actual separate pile.