I could prolly do even T4 if I wanted, but is not efficient at all. Since T1 opens Torment legendaries, I rather do that very fast to get more drops per hour, than do it really slow on higher difficulties and risk dying every now and then. As for your monk issues, I see what's going on. Your monk is not hitting anything in many cases and that's because the skill you are using. This is my current monk build (hope the link shows up right):
http://us.battle.net/d3/en/calculator/m ... bUh!cYZacYFor all my characters, left click is a signature skill so I recover mana/arcane when I run out of it. Right click is the mana/arcane spender which does most of the damage. When I'm doing damage, I need the monk to have full spirit to cast his full combo (implosion X times, palm X times, inner sanctuary and mantra of conviction if needed) and for that to happen, he needs a good range skill with good spirit generation to make sure it's always hitting mobs. That's why I use Deadly Reach with Strike from Beyond rune, which has huge reach and I'm always hitting and generating spirit. Additionaly, the key to a good ZDPS monk is high attack speed (2-3 APS) and high crit chance (50%+). Good range, good spirit generator, % resource and spirit generation items, high attack speed/crit, etc. and u will never run out of spirit. Stack attack speed and crit in all your jewelry, helm and gloves. The same with Paragon points so u meet those requirements. % Resource and Spirit regen helps, but more important are attack speed and crit.
Also there's a legendary ring that helps with Spirit Regeneration:
http://us.battle.net/d3/en/item/band-of ... e-chambersIt's not mandatory, but if u get one, it helps too. Also, not mandatory but helps me a lot are VideoFX of the resources of all my chars on my main screen. The most important one being the monks. So right beside the Arcane pool of my main character, I have a VideoFX screen of the Spirit pool of my monk, so at all times I can see if I have spirit to cast Implosion, Palm, Inner Sanctuary, etc. It doesn't need to be the whole Spirit bubble. It can be just a vertical rectangle of the middle of the resource pool so u can see where u are at.
And finally, another reason why I don't pick higher Torment difficulties is because long fights are bad for multiboxing. With all the new affixes on elites, Nightmarish is VERY common and that get's me out of sync and sometimes killed. Running out of resources is very easy when your monk is hitting nothing but air, casting skills in a corner, far from your party. I rather kill fast to avoid having my party running all over the place. Elite fights should take less than 5 seconds to avoid out of sync issues that come when elites/minions start spamming skills. Nightmarish with Electric is very common now a days and that screws me faster than any other combo. Killing them instantly is a priority to my efficiency. Short fights = no spirit issues too.
I may move to T2 since T1 is already too easy. Whites are killed instantly and elites die in like 3 secs. I'll try T2 and see if that still works fast or if I need a little more DPS and eHP on my party to handle T2 as fast as T1. I also wanna test Blackhole on 1 of my wizards.The Event Horizon rune sucks all the shit Elites cast. I haven't used it yet, but read it sucks waller, frozen, etc. which makes it a great CC skill.
Hope my tips help with your spirit issues. Just by changing the skill u will notice a big difference. Follow the rest of suggestions and u will never run out of spirit. Also, u can consider using Strong Spirit rune for Exploding Palm. 1 explosion and u will have full spirit, but it's less DPS for your party.