Hi OP
If you can use editors it would be best to use that, its built into the system and you can fully manage them without adding new fields and modifications.
From the help file in Admin
Editors are a powerful new feature of Links SQL. They allow you to off load the maintenance of your directory to other users without having to give them access to your admin. With Editors, you can give users the ability to add, modify, delete, validate links as well alter the category structure.
If you wanted to go the staff route I'd have to take a closer look but I'd say that adding "staff" to the user table status selections would probably be the way to go.
Regards
minesite