As someone who originally mained Monk before capitalizing on the lack of tanks in the world, I think this guide is pretty okay. It surprised me when you claimed that Skill Speed is more important than Crit Rate, but your reasoning is pretty sound. Besides, they're supposedly weighted about equally and BiS gear focusing on Determination gives you almost equal values of both anyway.

Regarding Skill Speed and Greased Lightning, though... I think that autoattack speed is, in fact, affected by Greased Lightning. The evidence is admittedly pretty terrible as it was just me hitting a dummy and stopwatching the intervals between my autoattacks, but it looked like my 0 Stack interval was between 2.30-2.40 seconds or so and my 3 stack interval was around 2.00-2.10 seconds. It's not compelling by any means, but hopefully we can find a better way to test!