Hmm...Considering the possibilities of a human dual classed character, i would also suggest Fighter/Druid. Druids have these fantastic offensive spells such as summon giant insects and fireseeds and the seering orb, and what you can do is making your fighter climb to about 300000xp and dual class at that moment, and i think your character can be a maxed out druid with superb offensive power wearing super heavy armour.
Be sure to learn the arts of long swords for druid scimitars and missile weapons for super slings, or maybe clubs too.
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