Answers

Bark needs to come off immediately. Bark beetles will take over if not removed.

You shouldn’t have to install insulation, but a vapor barrier for sure. You must take care of any rotten logs first or they will continue to rot under the siding causing structural issues later.

Call Mike at 866-670-3020.

Not sure what machine. I would call a local sawmill.

It sounds like it needs to be stripped and re-stained. Call Mike at 866-670-3020 for help and quote.

You may have to run fir stripping, but yes, it can be done. Call timeless Wood Care for help and products at 800-564-2987.

Call Timeless Wood Care at 800-564-2987. They have the screws and chink that you will need.

I would recommend putting Tyvek first, but you do not have to. Check your local building codes.

Yes, it would have to filled in with similar logs style. Call Ryan at 877-788-5647 for help.

You will only need the nails if you are using mortar for chinking, which I do not recommend.