Answers

It sounds like you need to have the exterior completely caulked or chinked. Call Mike at 866-670-3020 for help and estimate.

I would call a local exterminator.

I would go with the Cedar over the White Pine. You should still apply a borate treatment.

Call Dave for the materials you will need. They do make a product called Yard Guard for fresh logs. 800-564-2987

Yikes! Move to Michigan! Just kidding. Call a local exterminator.

Not sure what they are, but real good chance they are from the wood.

Call Dave at 800-564-2987. He will have what you need.

You should apply it to the interior as well.

I would recommend an exterminator that is familiar with the pests in your area.

Sounds like Powder Post Beetle with the holes you are describing. The only good way to get rid of them is to have the house stripped and apply a good borate solution, then re-stain.