[Tricky]

The combat insight epic feat could prove useful (Int determines Attack modifier, if higher than Strength), though you'd have to get through the non-epic levels without it. Combined with Weapon Finesse (Dex determines Hit modifier, if higher than Strength)and light weapons (which count as normal weapons due to your size) and a light weapon, you would overcome your strength penaly to your race. And you get more skill points to distribute too.

For feats like Cleave you'd still need a minimum of 13 strength though.