PS: Some people may argue you need to buff yourself while in the fight already, I don't know, but awesome job anyways.
You don't, all mp10 azmodan records since first person started doing it, count from the moment you deal first damage to boss (when his health bar appears). I could spawn these globes right before enterining his room, just wanted to show how I got them. Also this is all strategy, it you look at it, ghom gets blinded by scoundrel, right before he was about to touch cloud of bats. That is all indended and planned, so I charge up bats to max damage, and then start dealing maximum damage. It provides better result vs situation if I started channeling this skill while hitting ghom from start.
As for gear, nothing really that special, I swap do bats reduction soj, but in normal gameplay in case of my weapon, i don't use it.
Also a 0cd dog swap (weak items just to get globes).