[Nagoya]

to be more specific,

DEX improves your chances to proc. not necessary at launch. 85 is super fine. (technically it also helps you level up some weapon skills)
AGI will do shit nothing for you above 75. not necessary at launch and ever after. 85 is super fine cause it means you're still at 75 when/if you wear a Fungi. (technically it also gives you a very ridiculously tiny bit of AC)

that plus above two posts should clear things up for you OP.
if i were to play a monk day one of green i'd go +20 STR and never look back.