Good plan op except one little problem if everyone runs before the plumes come then you have a higher chance of getting killed as you are liable to run into someone else's plume instead, best method for this is the line method behind Titan that way only need to run left or right to get out of the way. There is sometimes lag in the instance and can be clearly out of the aoe well before the timer has even finished casting and still get hit by the plume because of lag between client and server, best way to get around this is to use instant cast ability so server registers your new placement