As for Volume Seven, it's now up to 30,000 words (around 120 pages). The way it's going so far, when this volume is finished I think it'll be the longest installment in the series by far at an estimated 100,000 or so words (400 pages, yikes!), surpassing Volume Six's 90,500 words (362 pages). I hadn't originally planned it that way, but I guess it makes sense considering that it will be the epic finale to the whole seven-book arc.* We shall see. Either way, I'm really enjoying writing it, which is always a good sign. Stay tuned for more updates!
* Long-time readers of this blog and/or fans of the Joel Suzuki series may recall this post that talked about the possibility of there being Volumes Eight through Eleven, which, if they happen, will probably be "post-adventures" that happen outside of the main seven-volume story.