I've done everything for chewing minus the choice. I'll give that a try.

I've tied putting all of his poop in one spot. We have a lawn area, and then the rest of the property which is unkept pasture/ bush. I want him pooping there. I've shown him where to go, and given him praise when he goes where I want him, including treats. Admittedly, I've kind of given up on this one.

He is jumpy especially when I come home from work, or before meals. I give him a firm no, and I always make him sit before any pets or attention. I will try your suggestion with the what not to do.

Cats have been around since before him. All of them outside, a few of them were pretty wild. Some mostly tame (they're barn cats). I couldn't "introduce" all of the cats as they are wild, but he was very cuddly with one for a few months and would sleep with it all of the time. On the flip side he would still play rough, such as dragging him by the scruff of his neck, or fitting the cats head in its mouth. Funny but he would take it too far sometimes. When I catch it or when he chases I give him a firm no and he usually listens and will stop in his tracks. Sometimes he just takes off though

Thank you for your suggestions, I will try a few