If you actually like the Monk/Sorc build, I'd consider Monk/PsyWar- just a quick glance reveals that you'd have options like:
An Enlarge ability that you can use to boost your size two categories, not one.
Better (but not full) BAB.
Proficiency with all martial weapons (see below)...and armor, if you'd need it (for a disguise, for instance).
More Feats- almost as many as the fighter.
D10 HD.
Bonuses to your psionics based upon a stat you already need as a Monk- Wisdom. This minimizes the Multiple Stat Dependency problem.
Access to psionic feats, like Up the Walls and Deep Impact. Who doesn't like going up walls or resoving melee attacks as touch attacks? Speed of Thought adds yet more speed to your PC.
If you're allowed to use the Dragon Compendium volume 1 from Paizo (its all official stuff, so I don't see why not), you'll also find 3 feats you might like: [/B]Pole Fighter[/B], Ring the Golden Bell & Unorthodox Flurry.
[/B]Pole Fighter[/B] lets you use a polearm as monk weapon- that means flurry with reach! Similarly, Unorthodox Flurry lets you use a chosen light weapon as a monk weapon.
Ring the Golden Bell is, in a way, the coolest- it lets you use your unarmed strikes as a ranged weapon, including any attacks you could deliver with an unarmed strike- Stunning Blow, a held touch spell or power, etc.
As an aside, I also like the Monk/Soulknife build- especially with the Unorthodox Flurry Feat, and/or the Soulknife Feats from Dragon magazine earlier this year. Flurrying with a weapon that can cost your opponent Int points is kewl! You literally beat your opponents stupid!