The Monk is an offensive machine, able to take down opponents in a matter of seconds. Most of his skills are focused on increasing damage, or dealing massive amounts of damage over a very short time (e.g. Fists of Fury or FoF).
His skills are heavily reliant on agility, and thus, that is the stat which this build will focus on maximising. This does, however, have the downside of a high min-max attack difference, resulting in unpredictable damage outputs later in-game as the gap increases, but the monk should be able to reliably dish out a high level of damage regardless.
The weapons of choice for a monk would be a dagger and a fist weapon.