Alright I think this is my final version:
Rouge 3 / Ranger 2 / Avenger 4
Ro1 - Sneak attack +1d6, trap finding, precise shot
Ra1 - Favored enemy, track, wild empathy
Ra 2 - Rapid Shot, able sniper
Ro 2 - Evasion
Ro 3 - Sneak Attack +2d6, trap finding
Av 1 - Sneak attack +3d6, Point Blank Shot...