Thanks for your fine work on the Bible, Ted. You are right in size not being a criteria for failure of books. I have three sections of Canadian Military History I have taken from a website and converted, the largest of which is over 13 meg. (they have numerous illustrations) I have had no problems reading any of them, except for some slowness in initial loading. I have been using calibre for the conversions to .lrf, as opposed to some others so that could have a bearing on success.
If you are looking for things to do and not totally exhausted, how about a concordance?
I agree with Harry's off-beat suggestion of an introduction. The New English Bible (print) has them. But I am not sure where you would find ones which would not step on copyright somewhere. You might check with the people who run:
http://bibledatabase.com/index.php. They might have a suggestion.