I do have a humble suggestion, though. Earlier in (I believe) this thread, someone made mention of the font used for the DVD-5 menus (which, if I'm not mistaken, is Times New Roman). Is there any way you could change the font for the DVD-9 to use the same font as the official DVDs (it's called Trajan, which is available for download as the "Episode I" font)? Aside from looking better than Times New Roman (which, I'll have to admit, gives off an "average product" vibe to me), it would tie in to the look and feel of the official discs.
Like I said, it's totally up to you. We're gonna love 'em no matter what you do. :)