Job infinite? Is this a hypothetical situation, or is there really a server that has no maximum job level?
Are you talking about the job level it self? Or having enough skill points to complete a full skill tree?
Please be more specific on what you want to do with your Champ. There could be Spirit, Combo, or even Efist.
High Dex, High STR, moderate VIT.
High INT/DEX. Asura damage is taken from how much SP you have left, race/size cards, and your ATK. The common weapon would be a +10 Mace 2 Hydras and 2 Skeleton Workers.