I don't really worry about the size of the part much any more. It's nice to have more time to work on the character, and to have big scenes to play. But if there's something playable there, and if it's interesting to do, then that's nice.
It's all about people. It's about networking and being nice to people and not burning any bridges. Your book is going to impress, but in the end it is people that are going to hire you.

