DPS comes from the following components: weapon damage, dex, critical hit chance, critical hit damage, attack speed, +average damage (from jewellery), +elemental damage modifiers (such as what you find in WKL or Inna's belt).
If you want to see the math behind the DPS calculations, check out the following website for an explanation: http://www.clicktoloot.com/p/combat.html -- this may help further your understanding of DPS calculations and in turn, could help in gearing decisions.
In terms of approaches, you can go with weapons with high native ChD and open socket with moderate weapon damage, or high weapon damage, low / no native ChD and open socket (with open sockets filled with best emerald you can reasonably afford). ChC, IAS, and dex are all critical in the process too. High native dex in weapons are often overlooked, so it's worth looking into as well.
Biggest favour you can do for yourself is to import your profile into d3up.com to do better analysis on your monk. Use it to evaluate future gearing decisions - this can save you lots of gold down the road.
Oh, and make sure you visit http://us.battle.net/d3/en/forum/topic/7415793376
for links to many other useful threads and sites.