Well if you looked up at the stickies in this particular section of the LS forums, you would see that
this guide was there. You want Enhanced effect on your weapons and armors to start with a fighter, and you want Strength or Dexterity on your charm. Only the main slot charm contributes stats to your character. The only reason to put a charm in the accessorie slot is if you are cast, because it saves mana (causes you to use only 75% of the normal mana you'd use and attack with 75% the effectiveness), or if you are healing with a heal charm (also 75% effective in the accessory slot).
Here is a handy chart to show the max stats for its tier.

Hope this helps!