Use the Player's Guide to help define your character, and remember that you will be starting in Trunau, so incorporate that in your background, accordingly.
If it's Paizo, it's good (mostly). Custom and 3rd party will be vetoed.
Stats: 20 Point Buy, no stat higher than 18 or lower than 8 post-racial adjustments
Race: Any race with RP 15 or less
Hit Points: Max at 1st level, half die + 1 after that
Gold: 150 gp
Traits: Up to 2; 1 campaign and/or 1 other
Backgrounds are the foundations we build to make or characters believable. They also provide hooks for the GM to engage your character more deeply in the story. Old enemies, lost relatives, and famous weapons make for terrific potential plotlines, which makes everyone the winner. I’m not asking for a short story or a novel here. Keep it skirt-length (long enough to cover the important details, but short enough to keep me interested). A few paragraphs would suffice. Make sure to cover any driving events in your character's life, specific enemies (if any), and future goals. The more I have to hook into, the more likely you are to feel your character engaged in the adventure. There may be in-game rewards for well-defined characters (more on that later).
150g for all classes. You were either given it, worked for it, or stole it. Work that into your background.
I am more interested in character concepts and stories than I am in how many times you can hit yourself in the head before you black out. Concept and background are just flat out more important to me than specific roles and the crunch. Don’t ask me what roles need filling. It doesn’t matter. I’d rather play with an all-rogue group that really gets into the storytelling than have the perfect 5 role setup.