I'm eager to see photos of this cabinet when it's done. At only 9ft3, it's a very manageable size. So if it sounds good in quarter-space or eighth-space from 40Hz up, you've really got something! And it looks to me like you've modeled it pretty well, so I see no reason to expect that performance won't be as predicted, at least up to 200Hz or so, where folds might start reducing output beyond what the model can show.Keep us posted! I'm anxious to know how it sounds, and to see some photos in December when you've got 'em done!