This is a VERY good exercise.Thomas Constable has a good commentary set in PDF or HTML format for free here:
There is a framework for SS to link to the commentaries here:
It would be easy to download the PDF files and make links to them. Incorporating the HTML into SS would [be] more difficult, but the instructions are included in the previous link.
I know this thread is a bit old, but thought I would chime in anyway.I use David Sorenson's commentary Understanding the Bible more than all the other commentaries combined. I believe it is one of the real jewels of Sword Searcher. Its notes are current and relevant. It address issues when appropriate you will address today in a way you will address them today. i.e. false sign gifts so common in some churches today. It is apologetically pre-tribulational and pre-millennial, something that is hard to find in most commentaries that are out of copy-write. It understands the New Testament church. It is not based on some "high church" philosophy or teaching of the 16th century. Dr. Sorenson is also a balanced and a real scholar in the area of the Greek text. He has written several books in defense of the KJV. It is worth every penny I paid for it and I am known as the cheapest of the cheapskates in my family. LOL