hey, Kazuhito, you recommended 30 pages per chapter, 7-9 chapters per volume. Doing the math, that's about 210-270 pages per volume. It makes sense, I've seen several tankoubon measure in at that count. However, when you asked if Midori Chi meant a page is each individual piece of paper, or if each page is each side of paper, it left me to wonder.... what did you, yourself, mean? You were referring to pages as each side of paper, right?
Anyway, I still need to develop my artwork. I don't have a template, or a scanner (and if I did, I'd hate to waste paper and get ink and graphite crap all over my hands), but until recently, I thought I couldn't work with a mouse, until I realized that, by tracing over the same lines repeatedly, I could develop a sketchy pic, which I could then edit. I'm still waiting to borrow a copy of Photoshop, though, so I haven't worked much with it. However, I did observe and sketch a couple pictures in MS-paint using that mouse-tracing method, and I think they turned up pretty alright. 'Course, I'm hoping, if my artwork ends up good at all, that I can give it a genuine manga effect rather than just looking like your typical digital art.
So, Kazuhito, you need a translator, eh? Personally, I'm a bit more confident in my language skills than that. I'd feel comfortable with just a proof-reader (native Japanese one, of course, but not someone who outright translates my English for me, in any case). And yes, I'm hoping to make a doujin originally in Japanese, not Japanese translated from English.