Hoping to build out the Products section in CK, a report or dashboard of buyers that I can see detailed information on sales per day/week/month/quarter, who bought what, etc.

You can see some of this already. If you go to the purchases, you can change the date range in the upper right hand corner so you can see your sales stats per time. As far as who bought what, you can see this when you click on the products tab and you see 1 purchase or 2 purchases or however number under the product, if you click on that it will show you who purchased. In there, if you click on any individual, it will take you to that individuals history and you can see their purchases as well as which emails they opened. I hope some of that helps you find the data you're looking for!