Keep in mind monk 2 & 3 should still be quite good for pvp.
One inch punch can spread it’s dot via breaking wheel, same for palm strike.
Not sure about God Finger Flick’s debuff.
But for pve energy blast deals less dmg then double punch spam due to the charge time. It’s neat if you charge it in between fights or use it’s large aoe to your advantage.
But it’s not a must have.
Weapon wise:
Prior to 170: any Wizard blade/Blunt of your liking.
After 170: Catacombs mace.
After 315: https://youtu.be/1_Jby83ZqS0?t=2m55s
And keep in mind the new dungeons should have 320 fire dmg arde dagger replacement. But also some high con shields that are really nice.
Skip Karacha/Venom imo, too expensive.