I have a 60 Monk, currently in Act 2 Inferno. First of all, as a melee class going into Act 2 Inferno, be prepared to be destroyed unless you have geared properly and have solid weapons. Stats that I would suggest based on what I have read online as well as by playing Act 2.
Resistances: 600 minimum to all. You should begin looking for gear that combos single resist (Fire, Cold, Lightning, etc) and All Resistances. When combined with the Passive Resistance ability, these can get you a long way. Obviously, the key is to focus on a single resistance and accumulate gear with this stat.
Health: Looking at anywhere between 36k to 44k. While resistances will help, you are still gonna take a lot of damage to the rare spawns.
Armor: Not sure on the exact amount but you should aim for between 55% and 65%. Once again, go with the passive to increase your armor based on dex.
Weapons: Sword and Board is the best combo from what Ive seen. It hurts your dps for sure but it is a must at this point for survivabiilty. The counter to this is Life on Hit gear. If you an get enough (800ish or so), you can possibly go duel wield. Most people on the D3 forums are currently pushing Life on Hit (different than life steal). Also, you need a weapon with a minimum of 850 damage.