Jeremy,
Thanks for writing, as your work develops I'd love to post it on the site. Activity on the site goes in ebbs and swells, but I'm sure new material will draw some interest. Last I checked a fair number of people visit the site regularly, and a fair number are on the email group.
Your research topic sounds interesting - it will certainly take you through the range of Gunton's thought. Gunton's 'non-academic' (I'm sure Gunton would have been bemused at that distinction - although I know you didn't mean to draw a clear line there) is some of his most interesting. A couple of thoughts as you begin (?) your research.
Gunton tended to explore ideas as he wrote, and he also tended to become fascinated with an idea and write extensively on the topic (still exploring as he wrote) until he ran the full stretch of an idea or until a new interesting idea arrested Gunton's thought. That is to say while he was a clear writer, he wasn't always precise, and it is very difficult to discuss Gunton's position on any topic from a limited corpus. He tended to implicitly assume his readers had read his previous works, or were at least familiar with his prior train of thought. While you will no doubt find some very interesting things in the occasional works, I would be careful to draw conclusions which could be thought to be in contradiction to Gunton's more measured works. One thing I learned of Gunton's writings is that they are best read in, and as a whole. It is unfortunate to say the very least that we will never have the entire whole.
On the other hand, Gunton frequently would introduce a topic or idea sometimes with the utmost brevity, yet would not develop or turn back to it. These unexplored themes abound everywhere, the occasional works included. It would be interesting to see how Gunton might have developed these themes.
If in your research you come across anything I've missed in my bibliography (it was hard going when I complied it, and I'm sure to have missed a few things) please share, and I'll add it to the site.
Best regards,
Nate