I'd cap it at 8.0ish if you get a C&P. TBH it's up to you as far as whether or not it's worth it or not. If you intend to sell...depends on a number of factors--recent sales in 8.0 are around $100, and it costs $40-50 or so for C&P if you sub modern, if that helps at all. (Personally, if you intend to grade this book by itself to sell, I'd say no, considering cost for CCS/grading/handling/shipping to and from for one book runs bare minimum about $60). That said, if you want it for PC, throw all of that out of the window! Totally up to you and what you want to do with the book.