Sorry Grace, not sure if there's much more info I can give you.
Here's some info about the documents listed on my particular setup...
Longest doc title = 117 chars including spaces
Longest list of categories = 3 categories with 64 total chars with spaces
Longest library name = 48 chars with spaces
Longest owner name = 17 chars with spaces
Not sure if that helps but feel free to give me ideas on what else you may need.