Sean,
Just in case you did not check old postings, here is some discussion on this topic.
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=23;t=000011
If you decide to go with one-piece glass, you should have no problem selling the original window parts in the swap meet (however, you might want to keep the parts in case you later change your mind - these parts are hard to find).
Tim