need help on who to get rid of for some mercs im wanting to add

Well so i assume you will take out the prophet for your Exo since you "need" your silence on the DA. I HATE VIKS, but let me say all high 99% of high lvl guys will tell you to ditch your BT for a N.Vik so thats the other change. Next your main will be in front and you drop LK for your artillery if you like him, can be substituted for cannon/jani/inventor "ALL YOUR PREFERENCE THERE" as they are all good.

Main, Spartan, N.Vik
Prophet, artillery/gun, pirate
Exo, oracle, Monk

now you have your elementalist which can go in midrow to replace someone, depending on what you require of your team. Play and see what you like as this is my opinion.

ic well i ditch da in the end 4 arty. so my formation is

front=lk,pirte,bt
mid=prophet,main,oricle
last=arty,sparta,ele

so yeah will a exo fit well w/what i have going atm? cuz if so he can front row in pve witch is all do anywise cuz i can replace my lk 4 him cuz imop hes a bit better just lacking good def.

If this is build is going pvp then you MUST have a monk somewhere. Replace your ele with a monk.

Front= LK, Main, BT
Mid= Prophet, Spartan, Pirate
Back= Arty, Oracle, Monk

Your healer and monk should always be in back row so there isn't silence pressure when you need them the most. 5 melees in a build is too much. There should be a max of 4 melee or a max of 3 staffs or ranged unless you know what you're doing. Anything more just screws things up.

im not doing pvp im doing pve