Comments: I think you are assuming that the MA is doing normal damage with unarmed attacks, but the Improved Unarmed Attack feat just gets rid of the AoO you provoke when attacking unarmed. As it is written, the MA does subdual with his unarmed attacks.
Balance: I would call it underpowered. Not in comparison to the fighter class, but in comparision to the Monk class.
Suggestions: Cut down on the exotic weapons and maybe the feat progresion and add Special ability choices (al la Rogue) at the upper levels. Many people (myself included) frown upon non-standard skills per lvl and what not. The class would be fine as a 2+ class, and that would give more room for crunchy bits.
Feats: Add Skill Focus(any class skill) to the list of bonus feats.