PA Bow/Flinter

I've never hunted coyotes before, but I got a call from my uncle saying there are a ton of them on his property and I should try to get some.

I've already got a .22-250 set up for groundhogs and a spot light, what else do I need? I've heard a bit about callers, are they worth the price? Any suggestions for one? If I'm doing calling sets, how far should I move between sets?

Also, when hunting in the dark, how often should you shine your light to see if they are around? Can I use white light, or do I need a red filter on it?

Thanks in advance.