Hi sounds like you have a pretty good idea on how to handle this Minor updates factual corrections are not a problem whatsoever Anything that you think might be challenged given your COI you can post on the talk page for another editor to review and add if necessary you can also come here and I ll have a look when I have time As for the chart it is my understanding that you would need to release it in the public domain in order for it to be posted here as WP uses a Creative Commons license Happy editing