my suggestion is: do all F2P quests before hitting 40 def.
look's better, and you know you have finished them all for laters.
even tho, all you realy need is dragon slayer.
also, a start would be 60 att, 75++++ str, 40 def.
60 att becouse at that CB, most of your opponents have 40+ def, and you will hit alot more with the extra att.