(Don't use huizu - that one refers to the Chinese minority.) Also, I just used huiyuan as an example - it is a poor choice as a class name (and doesn't sound cool at all, sounds like "group member" or something like that).
Also, it seems that jianghu sometimes is used with a negative connotation - I am a bit confused by the word these days, actually. Maybe it is more neutral than good/evil.
The difficult thing about Chinese legends is that the heroes tended to be all-in-one characters - i.e. excellent fighting and weapon skills, agile skills like running up walls or leaping from roof to roof, and mystical powers (healing, energy bolts, astral travel, telepathy, etc.)... In essence for AD&D that means that heroes would be something like fighters, clerics, thieves, and magic-users at the same time - at best you might end up with a monk-like character, but without any weapon restrictions, and with added mystical skills.
In actuality, monks and ascetics were able to use a wide range of weapons (swords, spears, etc.) - the only restrictions I might give them would be maybe bows and crossbows (or other mechanical weapons)...