VOP and LA don't mix. VOP is designed to give you the equivalernt of your equiptment by CL, NOT your ECL, as you would otherwise have.
Updated Action Monk:
Concept: The purpose of this build is not only to do lots of damage but to cost your opponents the most valuable commodity in the game: Actions. By getting yourself lots of AOOs and using trip and/or stun, you can get many extra attacks as well as cost them multiple actions each time you face them. You also can do a whole lot of damage, epsecially if your opponents are evil. Focus on Str with decent wis and dex.
Human M10/F2
Regular Feats(12) : Monastic training: Fighter (Eberon, but strictly worse than the other monk multiclass feats in C.Adv...necessary though to get holy ki strike and fist of the heavens by L12)(L9) Improved Unarmed Strike(M1), Stunning Fist(M1), Combat Reflexes(M2), Dodge (L3), Improved Trip(M6), Defensive Throw(L6), Hold The Line(F2), Sacred Vow(HB), Vow of Poverty(L1), Fist of the Heavens (F1)
Exalted Bonus Feats: Nymph's Kiss (Ex2), Touch of Golden Ice (Ex4), Nimbus of Light (Ex6), Holy Radience (Ex8), Sanctify Ki Strike(Ex10), Holy Ki Strike(Ex12),
In spite of my previous warning about VOP and LA, this works even better as a half ogre at LA2/M11/F2, but alas thats not where you are starting.
Alternatively, the non-VOP version that can buy a Ring of Continuous Enlarge for 16k....
Human M10/F2
Regular Feats(12) : Monastic training: Fighter(HB) Improved Unarmed Strike(M1), Stunning Fist(M1), Combat Reflexes(M2), Dodge (L3), Improved Trip(M6), Defensive Throw(L6), Hold The Line(F2), Fist of the Heavens (F1), Ability Focus (Stunning Fist) (L1), Sanctify Ki Strike (L12), Improved Natural Attack(L9)
This build is probably better. You lose the +2d6 v evil from Holy Ki Strike (which you can pick up at L15 anyway), gain more flexability in your eq, and instead move your damage v everytihng form 1d10 base to 3d6 base, plus you gian the large size bonuses to your str and trips (though loss to dex), and can take ability focus on your stuns.